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d6c9574f | 1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
5cb5a6ff | 2 | |
a7334b09 LP |
3 | /*** |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2010 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
9 | under the terms of the GNU Lesser General Public License as published by |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
a7334b09 LP |
11 | (at your option) any later version. |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 16 | Lesser General Public License for more details. |
a7334b09 | 17 | |
5430f7f2 | 18 | You should have received a copy of the GNU Lesser General Public License |
a7334b09 LP |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
20 | ***/ | |
21 | ||
5cb5a6ff | 22 | #include <errno.h> |
034c6ed7 | 23 | #include <signal.h> |
2c4104f0 | 24 | #include <unistd.h> |
5cb5a6ff | 25 | |
574634bc | 26 | #include "async.h" |
4b939747 | 27 | #include "manager.h" |
87f0e418 | 28 | #include "unit.h" |
5cb5a6ff LP |
29 | #include "service.h" |
30 | #include "load-fragment.h" | |
31 | #include "load-dropin.h" | |
034c6ed7 | 32 | #include "log.h" |
2c4104f0 | 33 | #include "strv.h" |
9e2f7c11 | 34 | #include "unit-name.h" |
41f9172f | 35 | #include "unit-printf.h" |
4139c1b2 | 36 | #include "dbus-service.h" |
514f4ef5 | 37 | #include "special.h" |
9a57c629 | 38 | #include "exit-status.h" |
f6a6225e | 39 | #include "def.h" |
9eb977db | 40 | #include "path-util.h" |
f6a6225e | 41 | #include "util.h" |
7f110ff9 | 42 | #include "utf8.h" |
4d1a6904 | 43 | #include "env-util.h" |
a5c32cff | 44 | #include "fileio.h" |
057171ef | 45 | #include "bus-error.h" |
718db961 | 46 | #include "bus-util.h" |
e44da745 | 47 | #include "bus-kernel.h" |
6482f626 | 48 | #include "formats-util.h" |
0b452006 | 49 | #include "process-util.h" |
24882e06 | 50 | #include "signal-util.h" |
034c6ed7 | 51 | |
acbb0225 | 52 | static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = { |
87f0e418 LP |
53 | [SERVICE_DEAD] = UNIT_INACTIVE, |
54 | [SERVICE_START_PRE] = UNIT_ACTIVATING, | |
55 | [SERVICE_START] = UNIT_ACTIVATING, | |
56 | [SERVICE_START_POST] = UNIT_ACTIVATING, | |
57 | [SERVICE_RUNNING] = UNIT_ACTIVE, | |
80876c20 | 58 | [SERVICE_EXITED] = UNIT_ACTIVE, |
032ff4af | 59 | [SERVICE_RELOAD] = UNIT_RELOADING, |
87f0e418 | 60 | [SERVICE_STOP] = UNIT_DEACTIVATING, |
db2cb23b | 61 | [SERVICE_STOP_SIGABRT] = UNIT_DEACTIVATING, |
87f0e418 LP |
62 | [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING, |
63 | [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING, | |
64 | [SERVICE_STOP_POST] = UNIT_DEACTIVATING, | |
65 | [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING, | |
66 | [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING, | |
fdf20a31 | 67 | [SERVICE_FAILED] = UNIT_FAILED, |
6124958c | 68 | [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING |
034c6ed7 | 69 | }; |
5cb5a6ff | 70 | |
e056b01d LP |
71 | /* For Type=idle we never want to delay any other jobs, hence we |
72 | * consider idle jobs active as soon as we start working on them */ | |
73 | static const UnitActiveState state_translation_table_idle[_SERVICE_STATE_MAX] = { | |
74 | [SERVICE_DEAD] = UNIT_INACTIVE, | |
75 | [SERVICE_START_PRE] = UNIT_ACTIVE, | |
76 | [SERVICE_START] = UNIT_ACTIVE, | |
77 | [SERVICE_START_POST] = UNIT_ACTIVE, | |
78 | [SERVICE_RUNNING] = UNIT_ACTIVE, | |
79 | [SERVICE_EXITED] = UNIT_ACTIVE, | |
80 | [SERVICE_RELOAD] = UNIT_RELOADING, | |
81 | [SERVICE_STOP] = UNIT_DEACTIVATING, | |
db2cb23b | 82 | [SERVICE_STOP_SIGABRT] = UNIT_DEACTIVATING, |
e056b01d LP |
83 | [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING, |
84 | [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING, | |
85 | [SERVICE_STOP_POST] = UNIT_DEACTIVATING, | |
86 | [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING, | |
87 | [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING, | |
88 | [SERVICE_FAILED] = UNIT_FAILED, | |
89 | [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING | |
90 | }; | |
91 | ||
718db961 LP |
92 | static int service_dispatch_io(sd_event_source *source, int fd, uint32_t events, void *userdata); |
93 | static int service_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata); | |
94 | static int service_dispatch_watchdog(sd_event_source *source, usec_t usec, void *userdata); | |
95 | ||
842129f5 | 96 | static void service_enter_signal(Service *s, ServiceState state, ServiceResult f); |
308d72dc | 97 | static void service_enter_reload_by_notify(Service *s); |
842129f5 | 98 | |
a16e1123 LP |
99 | static void service_init(Unit *u) { |
100 | Service *s = SERVICE(u); | |
101 | ||
102 | assert(u); | |
ac155bb8 | 103 | assert(u->load_state == UNIT_STUB); |
a16e1123 | 104 | |
1f19a534 OS |
105 | s->timeout_start_usec = u->manager->default_timeout_start_usec; |
106 | s->timeout_stop_usec = u->manager->default_timeout_stop_usec; | |
107 | s->restart_usec = u->manager->default_restart_usec; | |
0b86feac | 108 | s->type = _SERVICE_TYPE_INVALID; |
a16e1123 | 109 | s->socket_fd = -1; |
e44da745 | 110 | s->bus_endpoint_fd = -1; |
3185a36b | 111 | s->guess_main_pid = true; |
a16e1123 | 112 | |
085afe36 | 113 | RATELIMIT_INIT(s->start_limit, u->manager->default_start_limit_interval, u->manager->default_start_limit_burst); |
a16e1123 LP |
114 | |
115 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; | |
116 | } | |
117 | ||
5e94833f LP |
118 | static void service_unwatch_control_pid(Service *s) { |
119 | assert(s); | |
120 | ||
121 | if (s->control_pid <= 0) | |
122 | return; | |
123 | ||
124 | unit_unwatch_pid(UNIT(s), s->control_pid); | |
125 | s->control_pid = 0; | |
126 | } | |
127 | ||
128 | static void service_unwatch_main_pid(Service *s) { | |
129 | assert(s); | |
130 | ||
131 | if (s->main_pid <= 0) | |
132 | return; | |
133 | ||
134 | unit_unwatch_pid(UNIT(s), s->main_pid); | |
135 | s->main_pid = 0; | |
136 | } | |
137 | ||
3e52541e MS |
138 | static void service_unwatch_pid_file(Service *s) { |
139 | if (!s->pid_file_pathspec) | |
140 | return; | |
141 | ||
f2341e0a | 142 | log_unit_debug(UNIT(s), "Stopping watch for PID file %s", s->pid_file_pathspec->path); |
718db961 | 143 | path_spec_unwatch(s->pid_file_pathspec); |
3e52541e MS |
144 | path_spec_done(s->pid_file_pathspec); |
145 | free(s->pid_file_pathspec); | |
146 | s->pid_file_pathspec = NULL; | |
147 | } | |
148 | ||
5925dd3c | 149 | static int service_set_main_pid(Service *s, pid_t pid) { |
e55224ca LP |
150 | pid_t ppid; |
151 | ||
5925dd3c LP |
152 | assert(s); |
153 | ||
154 | if (pid <= 1) | |
155 | return -EINVAL; | |
156 | ||
157 | if (pid == getpid()) | |
158 | return -EINVAL; | |
159 | ||
7400b9d2 LP |
160 | if (s->main_pid == pid && s->main_pid_known) |
161 | return 0; | |
162 | ||
163 | if (s->main_pid != pid) { | |
164 | service_unwatch_main_pid(s); | |
165 | exec_status_start(&s->main_exec_status, pid); | |
166 | } | |
41efeaec | 167 | |
6dfa5494 LP |
168 | s->main_pid = pid; |
169 | s->main_pid_known = true; | |
170 | ||
171 | if (get_parent_of_pid(pid, &ppid) >= 0 && ppid != getpid()) { | |
f2341e0a | 172 | log_unit_warning(UNIT(s), "Supervising process "PID_FMT" which is not our child. We'll most likely not notice when it exits.", pid); |
6dfa5494 LP |
173 | s->main_pid_alien = true; |
174 | } else | |
175 | s->main_pid_alien = false; | |
5925dd3c LP |
176 | |
177 | return 0; | |
178 | } | |
179 | ||
4f2d528d LP |
180 | static void service_close_socket_fd(Service *s) { |
181 | assert(s); | |
182 | ||
574634bc | 183 | s->socket_fd = asynchronous_close(s->socket_fd); |
4f2d528d LP |
184 | } |
185 | ||
6cf6bbc2 LP |
186 | static void service_connection_unref(Service *s) { |
187 | assert(s); | |
188 | ||
9444b1f2 | 189 | if (!UNIT_ISSET(s->accept_socket)) |
6cf6bbc2 LP |
190 | return; |
191 | ||
57020a3a LP |
192 | socket_connection_unref(SOCKET(UNIT_DEREF(s->accept_socket))); |
193 | unit_ref_unset(&s->accept_socket); | |
6cf6bbc2 LP |
194 | } |
195 | ||
a6927d7f MO |
196 | static void service_stop_watchdog(Service *s) { |
197 | assert(s); | |
198 | ||
718db961 | 199 | s->watchdog_event_source = sd_event_source_unref(s->watchdog_event_source); |
842129f5 | 200 | s->watchdog_timestamp = DUAL_TIMESTAMP_NULL; |
a6927d7f MO |
201 | } |
202 | ||
842129f5 | 203 | static void service_start_watchdog(Service *s) { |
bb242b7b MO |
204 | int r; |
205 | ||
206 | assert(s); | |
207 | ||
842129f5 | 208 | if (s->watchdog_usec <= 0) |
bb242b7b MO |
209 | return; |
210 | ||
718db961 LP |
211 | if (s->watchdog_event_source) { |
212 | r = sd_event_source_set_time(s->watchdog_event_source, s->watchdog_timestamp.monotonic + s->watchdog_usec); | |
213 | if (r < 0) { | |
f2341e0a | 214 | log_unit_warning_errno(UNIT(s), r, "Failed to reset watchdog timer: %m"); |
718db961 LP |
215 | return; |
216 | } | |
217 | ||
842129f5 | 218 | r = sd_event_source_set_enabled(s->watchdog_event_source, SD_EVENT_ONESHOT); |
c4ef3317 | 219 | } else { |
6a0f1f6d LP |
220 | r = sd_event_add_time( |
221 | UNIT(s)->manager->event, | |
222 | &s->watchdog_event_source, | |
223 | CLOCK_MONOTONIC, | |
224 | s->watchdog_timestamp.monotonic + s->watchdog_usec, 0, | |
225 | service_dispatch_watchdog, s); | |
c4ef3317 | 226 | if (r < 0) { |
f2341e0a | 227 | log_unit_warning_errno(UNIT(s), r, "Failed to add watchdog timer: %m"); |
c4ef3317 LP |
228 | return; |
229 | } | |
230 | ||
7dfbe2e3 TG |
231 | (void) sd_event_source_set_description(s->watchdog_event_source, "service-watchdog"); |
232 | ||
c4ef3317 LP |
233 | /* Let's process everything else which might be a sign |
234 | * of living before we consider a service died. */ | |
235 | r = sd_event_source_set_priority(s->watchdog_event_source, SD_EVENT_PRIORITY_IDLE); | |
236 | } | |
718db961 | 237 | |
bb242b7b | 238 | if (r < 0) |
f2341e0a | 239 | log_unit_warning_errno(UNIT(s), r, "Failed to install watchdog timer: %m"); |
bb242b7b MO |
240 | } |
241 | ||
a6927d7f MO |
242 | static void service_reset_watchdog(Service *s) { |
243 | assert(s); | |
244 | ||
245 | dual_timestamp_get(&s->watchdog_timestamp); | |
842129f5 | 246 | service_start_watchdog(s); |
a6927d7f MO |
247 | } |
248 | ||
a354329f LP |
249 | static void service_fd_store_unlink(ServiceFDStore *fs) { |
250 | ||
251 | if (!fs) | |
252 | return; | |
253 | ||
254 | if (fs->service) { | |
255 | assert(fs->service->n_fd_store > 0); | |
256 | LIST_REMOVE(fd_store, fs->service->fd_store, fs); | |
257 | fs->service->n_fd_store--; | |
258 | } | |
259 | ||
260 | if (fs->event_source) { | |
261 | sd_event_source_set_enabled(fs->event_source, SD_EVENT_OFF); | |
262 | sd_event_source_unref(fs->event_source); | |
263 | } | |
264 | ||
265 | safe_close(fs->fd); | |
266 | free(fs); | |
267 | } | |
268 | ||
269 | static void service_release_resources(Unit *u) { | |
270 | Service *s = SERVICE(u); | |
271 | ||
272 | assert(s); | |
273 | ||
274 | if (!s->fd_store) | |
275 | return; | |
276 | ||
f2341e0a | 277 | log_unit_debug(u, "Releasing all resources."); |
a354329f LP |
278 | |
279 | while (s->fd_store) | |
280 | service_fd_store_unlink(s->fd_store); | |
281 | ||
282 | assert(s->n_fd_store == 0); | |
283 | } | |
284 | ||
87f0e418 LP |
285 | static void service_done(Unit *u) { |
286 | Service *s = SERVICE(u); | |
44d8db9e LP |
287 | |
288 | assert(s); | |
289 | ||
290 | free(s->pid_file); | |
291 | s->pid_file = NULL; | |
292 | ||
8c47c732 LP |
293 | free(s->status_text); |
294 | s->status_text = NULL; | |
295 | ||
efe6e7d3 MO |
296 | free(s->reboot_arg); |
297 | s->reboot_arg = NULL; | |
298 | ||
613b411c | 299 | s->exec_runtime = exec_runtime_unref(s->exec_runtime); |
e537352b | 300 | exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX); |
44d8db9e | 301 | s->control_command = NULL; |
867b3b7d | 302 | s->main_command = NULL; |
44d8db9e | 303 | |
37520c1b LP |
304 | exit_status_set_free(&s->restart_prevent_status); |
305 | exit_status_set_free(&s->restart_force_status); | |
306 | exit_status_set_free(&s->success_status); | |
96342de6 | 307 | |
44d8db9e LP |
308 | /* This will leak a process, but at least no memory or any of |
309 | * our resources */ | |
5e94833f LP |
310 | service_unwatch_main_pid(s); |
311 | service_unwatch_control_pid(s); | |
3e52541e | 312 | service_unwatch_pid_file(s); |
44d8db9e | 313 | |
05e343b7 | 314 | if (s->bus_name) { |
ac155bb8 | 315 | unit_unwatch_bus_name(u, s->bus_name); |
05e343b7 LP |
316 | free(s->bus_name); |
317 | s->bus_name = NULL; | |
318 | } | |
319 | ||
e44da745 | 320 | s->bus_endpoint_fd = safe_close(s->bus_endpoint_fd); |
4f2d528d | 321 | service_close_socket_fd(s); |
6cf6bbc2 | 322 | service_connection_unref(s); |
4f2d528d | 323 | |
57020a3a | 324 | unit_ref_unset(&s->accept_socket); |
f976f3f6 | 325 | |
bb242b7b MO |
326 | service_stop_watchdog(s); |
327 | ||
718db961 | 328 | s->timer_event_source = sd_event_source_unref(s->timer_event_source); |
a354329f LP |
329 | |
330 | service_release_resources(u); | |
718db961 LP |
331 | } |
332 | ||
2339fc93 LP |
333 | static int on_fd_store_io(sd_event_source *e, int fd, uint32_t revents, void *userdata) { |
334 | ServiceFDStore *fs = userdata; | |
335 | ||
336 | assert(e); | |
337 | assert(fs); | |
338 | ||
339 | /* If we get either EPOLLHUP or EPOLLERR, it's time to remove this entry from the fd store */ | |
340 | service_fd_store_unlink(fs); | |
341 | return 0; | |
342 | } | |
343 | ||
344 | static int service_add_fd_store(Service *s, int fd) { | |
345 | ServiceFDStore *fs; | |
346 | int r; | |
347 | ||
348 | assert(s); | |
349 | assert(fd >= 0); | |
350 | ||
351 | if (s->n_fd_store >= s->n_fd_store_max) | |
352 | return 0; | |
353 | ||
354 | LIST_FOREACH(fd_store, fs, s->fd_store) { | |
355 | r = same_fd(fs->fd, fd); | |
356 | if (r < 0) | |
357 | return r; | |
358 | if (r > 0) { | |
359 | /* Already included */ | |
360 | safe_close(fd); | |
361 | return 1; | |
362 | } | |
363 | } | |
364 | ||
365 | fs = new0(ServiceFDStore, 1); | |
366 | if (!fs) | |
367 | return -ENOMEM; | |
368 | ||
369 | fs->fd = fd; | |
370 | fs->service = s; | |
371 | ||
372 | r = sd_event_add_io(UNIT(s)->manager->event, &fs->event_source, fd, 0, on_fd_store_io, fs); | |
373 | if (r < 0) { | |
374 | free(fs); | |
375 | return r; | |
376 | } | |
377 | ||
7dfbe2e3 TG |
378 | (void) sd_event_source_set_description(fs->event_source, "service-fd-store"); |
379 | ||
2339fc93 LP |
380 | LIST_PREPEND(fd_store, s->fd_store, fs); |
381 | s->n_fd_store++; | |
382 | ||
383 | return 1; | |
384 | } | |
385 | ||
386 | static int service_add_fd_store_set(Service *s, FDSet *fds) { | |
387 | int r; | |
388 | ||
389 | assert(s); | |
390 | ||
391 | if (fdset_size(fds) <= 0) | |
392 | return 0; | |
393 | ||
394 | while (s->n_fd_store < s->n_fd_store_max) { | |
395 | _cleanup_close_ int fd = -1; | |
396 | ||
397 | fd = fdset_steal_first(fds); | |
398 | if (fd < 0) | |
399 | break; | |
400 | ||
401 | r = service_add_fd_store(s, fd); | |
402 | if (r < 0) | |
f2341e0a | 403 | return log_unit_error_errno(UNIT(s), r, "Couldn't add fd to fd store: %m"); |
2339fc93 | 404 | if (r > 0) { |
f2341e0a | 405 | log_unit_debug(UNIT(s), "Added fd to fd store."); |
2339fc93 LP |
406 | fd = -1; |
407 | } | |
408 | } | |
409 | ||
410 | if (fdset_size(fds) > 0) | |
f2341e0a | 411 | log_unit_warning(UNIT(s), "Tried to store more fds than FDStoreMax=%u allows, closing remaining.", s->n_fd_store_max); |
2339fc93 LP |
412 | |
413 | return 0; | |
414 | } | |
415 | ||
718db961 LP |
416 | static int service_arm_timer(Service *s, usec_t usec) { |
417 | int r; | |
418 | ||
419 | assert(s); | |
420 | ||
718db961 LP |
421 | if (s->timer_event_source) { |
422 | r = sd_event_source_set_time(s->timer_event_source, now(CLOCK_MONOTONIC) + usec); | |
423 | if (r < 0) | |
424 | return r; | |
425 | ||
426 | return sd_event_source_set_enabled(s->timer_event_source, SD_EVENT_ONESHOT); | |
427 | } | |
428 | ||
7dfbe2e3 | 429 | r = sd_event_add_time( |
6a0f1f6d LP |
430 | UNIT(s)->manager->event, |
431 | &s->timer_event_source, | |
432 | CLOCK_MONOTONIC, | |
433 | now(CLOCK_MONOTONIC) + usec, 0, | |
434 | service_dispatch_timer, s); | |
7dfbe2e3 TG |
435 | if (r < 0) |
436 | return r; | |
437 | ||
438 | (void) sd_event_source_set_description(s->timer_event_source, "service-timer"); | |
439 | ||
440 | return 0; | |
44d8db9e LP |
441 | } |
442 | ||
243b1432 LP |
443 | static int service_verify(Service *s) { |
444 | assert(s); | |
445 | ||
1124fe6f | 446 | if (UNIT(s)->load_state != UNIT_LOADED) |
243b1432 LP |
447 | return 0; |
448 | ||
96fb8242 | 449 | if (!s->exec_command[SERVICE_EXEC_START] && !s->exec_command[SERVICE_EXEC_STOP]) { |
f2341e0a | 450 | log_unit_error(UNIT(s), "Service lacks both ExecStart= and ExecStop= setting. Refusing."); |
243b1432 LP |
451 | return -EINVAL; |
452 | } | |
453 | ||
96fb8242 | 454 | if (s->type != SERVICE_ONESHOT && !s->exec_command[SERVICE_EXEC_START]) { |
f2341e0a | 455 | log_unit_error(UNIT(s), "Service has no ExecStart= setting, which is only allowed for Type=oneshot services. Refusing."); |
96fb8242 LP |
456 | return -EINVAL; |
457 | } | |
458 | ||
459 | if (!s->remain_after_exit && !s->exec_command[SERVICE_EXEC_START]) { | |
f2341e0a | 460 | log_unit_error(UNIT(s), "Service has no ExecStart= setting, which is only allowed for RemainAfterExit=yes services. Refusing."); |
96fb8242 LP |
461 | return -EINVAL; |
462 | } | |
463 | ||
464 | if (s->type != SERVICE_ONESHOT && s->exec_command[SERVICE_EXEC_START]->command_next) { | |
f2341e0a | 465 | log_unit_error(UNIT(s), "Service has more than one ExecStart= setting, which is only allowed for Type=oneshot services. Refusing."); |
6cf6bbc2 LP |
466 | return -EINVAL; |
467 | } | |
468 | ||
b0693d30 | 469 | if (s->type == SERVICE_ONESHOT && s->restart != SERVICE_RESTART_NO) { |
f2341e0a | 470 | log_unit_error(UNIT(s), "Service has Restart= setting other than no, which isn't allowed for Type=oneshot services. Refusing."); |
37520c1b LP |
471 | return -EINVAL; |
472 | } | |
473 | ||
55ebf98c | 474 | if (s->type == SERVICE_ONESHOT && !exit_status_set_is_empty(&s->restart_force_status)) { |
f2341e0a | 475 | log_unit_error(UNIT(s), "Service has RestartForceStatus= set, which isn't allowed for Type=oneshot services. Refusing."); |
b0693d30 MW |
476 | return -EINVAL; |
477 | } | |
478 | ||
05e343b7 | 479 | if (s->type == SERVICE_DBUS && !s->bus_name) { |
f2341e0a | 480 | log_unit_error(UNIT(s), "Service is of type D-Bus but no D-Bus service name has been specified. Refusing."); |
4d0e5dbd LP |
481 | return -EINVAL; |
482 | } | |
483 | ||
7e2668c6 | 484 | if (s->bus_name && s->type != SERVICE_DBUS) |
f2341e0a | 485 | log_unit_warning(UNIT(s), "Service has a D-Bus service name specified, but is not of type dbus. Ignoring."); |
7e2668c6 | 486 | |
ebc2259d | 487 | if (s->exec_context.pam_name && !(s->kill_context.kill_mode == KILL_CONTROL_GROUP || s->kill_context.kill_mode == KILL_MIXED)) { |
f2341e0a | 488 | log_unit_error(UNIT(s), "Service has PAM enabled. Kill mode must be set to 'control-group' or 'mixed'. Refusing."); |
05e343b7 LP |
489 | return -EINVAL; |
490 | } | |
491 | ||
243b1432 LP |
492 | return 0; |
493 | } | |
494 | ||
a40eb732 LP |
495 | static int service_add_default_dependencies(Service *s) { |
496 | int r; | |
497 | ||
498 | assert(s); | |
499 | ||
500 | /* Add a number of automatic dependencies useful for the | |
501 | * majority of services. */ | |
502 | ||
503 | /* First, pull in base system */ | |
8bb2d17d | 504 | r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_BASIC_TARGET, NULL, true); |
fccd44ec KS |
505 | if (r < 0) |
506 | return r; | |
a40eb732 LP |
507 | |
508 | /* Second, activate normal shutdown */ | |
8545f7ce | 509 | return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true); |
a40eb732 LP |
510 | } |
511 | ||
4dfc092a LP |
512 | static void service_fix_output(Service *s) { |
513 | assert(s); | |
514 | ||
515 | /* If nothing has been explicitly configured, patch default | |
516 | * output in. If input is socket/tty we avoid this however, | |
517 | * since in that case we want output to default to the same | |
518 | * place as we read input from. */ | |
519 | ||
520 | if (s->exec_context.std_error == EXEC_OUTPUT_INHERIT && | |
521 | s->exec_context.std_output == EXEC_OUTPUT_INHERIT && | |
522 | s->exec_context.std_input == EXEC_INPUT_NULL) | |
1124fe6f | 523 | s->exec_context.std_error = UNIT(s)->manager->default_std_error; |
4dfc092a LP |
524 | |
525 | if (s->exec_context.std_output == EXEC_OUTPUT_INHERIT && | |
526 | s->exec_context.std_input == EXEC_INPUT_NULL) | |
1124fe6f | 527 | s->exec_context.std_output = UNIT(s)->manager->default_std_output; |
4dfc092a LP |
528 | } |
529 | ||
8545f7ce LP |
530 | static int service_add_extras(Service *s) { |
531 | int r; | |
532 | ||
533 | assert(s); | |
534 | ||
535 | if (s->type == _SERVICE_TYPE_INVALID) { | |
536 | /* Figure out a type automatically */ | |
537 | if (s->bus_name) | |
538 | s->type = SERVICE_DBUS; | |
539 | else if (s->exec_command[SERVICE_EXEC_START]) | |
540 | s->type = SERVICE_SIMPLE; | |
541 | else | |
542 | s->type = SERVICE_ONESHOT; | |
543 | } | |
544 | ||
545 | /* Oneshot services have disabled start timeout by default */ | |
546 | if (s->type == SERVICE_ONESHOT && !s->start_timeout_defined) | |
547 | s->timeout_start_usec = 0; | |
548 | ||
549 | service_fix_output(s); | |
550 | ||
551 | r = unit_patch_contexts(UNIT(s)); | |
552 | if (r < 0) | |
553 | return r; | |
554 | ||
555 | r = unit_add_exec_dependencies(UNIT(s), &s->exec_context); | |
556 | if (r < 0) | |
557 | return r; | |
558 | ||
d79200e2 | 559 | r = unit_set_default_slice(UNIT(s)); |
8545f7ce LP |
560 | if (r < 0) |
561 | return r; | |
562 | ||
563 | if (s->type == SERVICE_NOTIFY && s->notify_access == NOTIFY_NONE) | |
564 | s->notify_access = NOTIFY_MAIN; | |
565 | ||
566 | if (s->watchdog_usec > 0 && s->notify_access == NOTIFY_NONE) | |
567 | s->notify_access = NOTIFY_MAIN; | |
568 | ||
569 | if (s->bus_name) { | |
570 | const char *n; | |
571 | ||
6962fd3b MB |
572 | n = strjoina(s->bus_name, ".busname"); |
573 | r = unit_add_dependency_by_name(UNIT(s), UNIT_AFTER, n, NULL, true); | |
8545f7ce LP |
574 | if (r < 0) |
575 | return r; | |
576 | ||
6962fd3b | 577 | r = unit_watch_bus_name(UNIT(s), s->bus_name); |
fc1ba5d1 LP |
578 | if (r == -EEXIST) |
579 | return log_unit_error_errno(UNIT(s), r, "Two services allocated for the same bus name %s, refusing operation.", s->bus_name); | |
8545f7ce | 580 | if (r < 0) |
fc1ba5d1 | 581 | return log_unit_error_errno(UNIT(s), r, "Cannot watch bus name %s: %m", s->bus_name); |
8545f7ce LP |
582 | } |
583 | ||
584 | if (UNIT(s)->default_dependencies) { | |
585 | r = service_add_default_dependencies(s); | |
586 | if (r < 0) | |
587 | return r; | |
588 | } | |
589 | ||
590 | return 0; | |
591 | } | |
592 | ||
e537352b | 593 | static int service_load(Unit *u) { |
e537352b | 594 | Service *s = SERVICE(u); |
8bb2d17d | 595 | int r; |
e537352b LP |
596 | |
597 | assert(s); | |
1e2e8133 | 598 | |
5cb5a6ff | 599 | /* Load a .service file */ |
c2756a68 LP |
600 | r = unit_load_fragment(u); |
601 | if (r < 0) | |
5cb5a6ff LP |
602 | return r; |
603 | ||
23a177ef | 604 | /* Still nothing found? Then let's give up */ |
ac155bb8 | 605 | if (u->load_state == UNIT_STUB) |
23a177ef | 606 | return -ENOENT; |
034c6ed7 | 607 | |
23a177ef | 608 | /* This is a new unit? Then let's add in some extras */ |
ac155bb8 | 609 | if (u->load_state == UNIT_LOADED) { |
c2756a68 LP |
610 | |
611 | /* We were able to load something, then let's add in | |
612 | * the dropin directories. */ | |
613 | r = unit_load_dropin(u); | |
614 | if (r < 0) | |
615 | return r; | |
616 | ||
8545f7ce LP |
617 | /* This is a new unit? Then let's add in some |
618 | * extras */ | |
619 | r = service_add_extras(s); | |
598459ce LP |
620 | if (r < 0) |
621 | return r; | |
8e274523 LP |
622 | } |
623 | ||
243b1432 | 624 | return service_verify(s); |
034c6ed7 LP |
625 | } |
626 | ||
87f0e418 | 627 | static void service_dump(Unit *u, FILE *f, const char *prefix) { |
5cb5a6ff | 628 | ServiceExecCommand c; |
87f0e418 | 629 | Service *s = SERVICE(u); |
47be870b | 630 | const char *prefix2; |
5cb5a6ff LP |
631 | |
632 | assert(s); | |
633 | ||
4c940960 | 634 | prefix = strempty(prefix); |
63c372cb | 635 | prefix2 = strjoina(prefix, "\t"); |
44d8db9e | 636 | |
5cb5a6ff | 637 | fprintf(f, |
81a2b7ce | 638 | "%sService State: %s\n" |
f42806df LP |
639 | "%sResult: %s\n" |
640 | "%sReload Result: %s\n" | |
81a2b7ce | 641 | "%sPermissionsStartOnly: %s\n" |
8e274523 | 642 | "%sRootDirectoryStartOnly: %s\n" |
02ee865a | 643 | "%sRemainAfterExit: %s\n" |
3185a36b | 644 | "%sGuessMainPID: %s\n" |
c952c6ec | 645 | "%sType: %s\n" |
2cf3143a | 646 | "%sRestart: %s\n" |
308d72dc LP |
647 | "%sNotifyAccess: %s\n" |
648 | "%sNotifyState: %s\n", | |
81a2b7ce | 649 | prefix, service_state_to_string(s->state), |
f42806df LP |
650 | prefix, service_result_to_string(s->result), |
651 | prefix, service_result_to_string(s->reload_result), | |
81a2b7ce | 652 | prefix, yes_no(s->permissions_start_only), |
8e274523 | 653 | prefix, yes_no(s->root_directory_start_only), |
02ee865a | 654 | prefix, yes_no(s->remain_after_exit), |
3185a36b | 655 | prefix, yes_no(s->guess_main_pid), |
c952c6ec | 656 | prefix, service_type_to_string(s->type), |
2cf3143a | 657 | prefix, service_restart_to_string(s->restart), |
308d72dc LP |
658 | prefix, notify_access_to_string(s->notify_access), |
659 | prefix, notify_state_to_string(s->notify_state)); | |
5cb5a6ff | 660 | |
70123e68 LP |
661 | if (s->control_pid > 0) |
662 | fprintf(f, | |
ccd06097 ZJS |
663 | "%sControl PID: "PID_FMT"\n", |
664 | prefix, s->control_pid); | |
70123e68 LP |
665 | |
666 | if (s->main_pid > 0) | |
667 | fprintf(f, | |
ccd06097 | 668 | "%sMain PID: "PID_FMT"\n" |
6dfa5494 LP |
669 | "%sMain PID Known: %s\n" |
670 | "%sMain PID Alien: %s\n", | |
ccd06097 | 671 | prefix, s->main_pid, |
6dfa5494 LP |
672 | prefix, yes_no(s->main_pid_known), |
673 | prefix, yes_no(s->main_pid_alien)); | |
70123e68 | 674 | |
034c6ed7 LP |
675 | if (s->pid_file) |
676 | fprintf(f, | |
677 | "%sPIDFile: %s\n", | |
678 | prefix, s->pid_file); | |
679 | ||
05e343b7 LP |
680 | if (s->bus_name) |
681 | fprintf(f, | |
682 | "%sBusName: %s\n" | |
683 | "%sBus Name Good: %s\n", | |
684 | prefix, s->bus_name, | |
685 | prefix, yes_no(s->bus_name_good)); | |
686 | ||
4819ff03 | 687 | kill_context_dump(&s->kill_context, f, prefix); |
5cb5a6ff LP |
688 | exec_context_dump(&s->exec_context, f, prefix); |
689 | ||
e537352b | 690 | for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) { |
5cb5a6ff | 691 | |
44d8db9e LP |
692 | if (!s->exec_command[c]) |
693 | continue; | |
694 | ||
40d50879 | 695 | fprintf(f, "%s-> %s:\n", |
94f04347 | 696 | prefix, service_exec_command_to_string(c)); |
44d8db9e LP |
697 | |
698 | exec_command_dump_list(s->exec_command[c], f, prefix2); | |
5cb5a6ff | 699 | } |
44d8db9e | 700 | |
8c47c732 LP |
701 | if (s->status_text) |
702 | fprintf(f, "%sStatus Text: %s\n", | |
703 | prefix, s->status_text); | |
a354329f LP |
704 | |
705 | if (s->n_fd_store_max > 0) { | |
706 | fprintf(f, | |
707 | "%sFile Descriptor Store Max: %u\n" | |
708 | "%sFile Descriptor Store Current: %u\n", | |
709 | prefix, s->n_fd_store_max, | |
710 | prefix, s->n_fd_store); | |
711 | } | |
5cb5a6ff LP |
712 | } |
713 | ||
c5419d42 | 714 | static int service_load_pid_file(Service *s, bool may_warn) { |
7fd1b19b | 715 | _cleanup_free_ char *k = NULL; |
034c6ed7 | 716 | int r; |
5925dd3c | 717 | pid_t pid; |
034c6ed7 LP |
718 | |
719 | assert(s); | |
720 | ||
034c6ed7 | 721 | if (!s->pid_file) |
13230d5d | 722 | return -ENOENT; |
034c6ed7 | 723 | |
117dcc57 ZJS |
724 | r = read_one_line_file(s->pid_file, &k); |
725 | if (r < 0) { | |
c5419d42 | 726 | if (may_warn) |
f2341e0a | 727 | log_unit_info_errno(UNIT(s), r, "PID file %s not readable (yet?) after %s: %m", s->pid_file, service_state_to_string(s->state)); |
034c6ed7 | 728 | return r; |
5375410b | 729 | } |
034c6ed7 | 730 | |
5925dd3c | 731 | r = parse_pid(k, &pid); |
bc41f93e ZJS |
732 | if (r < 0) { |
733 | if (may_warn) | |
f2341e0a | 734 | log_unit_info_errno(UNIT(s), r, "Failed to read PID from file %s: %m", s->pid_file); |
5925dd3c | 735 | return r; |
bc41f93e | 736 | } |
406eaf93 | 737 | |
9f5650ae | 738 | if (!pid_is_alive(pid)) { |
c5419d42 | 739 | if (may_warn) |
f2341e0a | 740 | log_unit_info(UNIT(s), "PID "PID_FMT" read from file %s does not exist or is a zombie.", pid, s->pid_file); |
e10c9985 YS |
741 | return -ESRCH; |
742 | } | |
743 | ||
db01f8b3 MS |
744 | if (s->main_pid_known) { |
745 | if (pid == s->main_pid) | |
746 | return 0; | |
747 | ||
f2341e0a | 748 | log_unit_debug(UNIT(s), "Main PID changing: "PID_FMT" -> "PID_FMT, s->main_pid, pid); |
8bb2d17d | 749 | |
db01f8b3 MS |
750 | service_unwatch_main_pid(s); |
751 | s->main_pid_known = false; | |
3a111838 | 752 | } else |
f2341e0a | 753 | log_unit_debug(UNIT(s), "Main PID loaded: "PID_FMT, pid); |
db01f8b3 | 754 | |
117dcc57 ZJS |
755 | r = service_set_main_pid(s, pid); |
756 | if (r < 0) | |
16f6025e LP |
757 | return r; |
758 | ||
117dcc57 | 759 | r = unit_watch_pid(UNIT(s), pid); |
bc41f93e | 760 | if (r < 0) { |
5925dd3c | 761 | /* FIXME: we need to do something here */ |
f2341e0a | 762 | log_unit_warning_errno(UNIT(s), r, "Failed to watch PID "PID_FMT" for service: %m", pid); |
5925dd3c | 763 | return r; |
bc41f93e | 764 | } |
034c6ed7 LP |
765 | |
766 | return 0; | |
767 | } | |
768 | ||
4fbf50b3 LP |
769 | static int service_search_main_pid(Service *s) { |
770 | pid_t pid; | |
771 | int r; | |
772 | ||
773 | assert(s); | |
774 | ||
3185a36b LP |
775 | /* If we know it anyway, don't ever fallback to unreliable |
776 | * heuristics */ | |
4fbf50b3 LP |
777 | if (s->main_pid_known) |
778 | return 0; | |
779 | ||
3185a36b LP |
780 | if (!s->guess_main_pid) |
781 | return 0; | |
782 | ||
4fbf50b3 LP |
783 | assert(s->main_pid <= 0); |
784 | ||
4ad49000 | 785 | pid = unit_search_main_pid(UNIT(s)); |
117dcc57 | 786 | if (pid <= 0) |
4fbf50b3 LP |
787 | return -ENOENT; |
788 | ||
f2341e0a | 789 | log_unit_debug(UNIT(s), "Main PID guessed: "PID_FMT, pid); |
117dcc57 ZJS |
790 | r = service_set_main_pid(s, pid); |
791 | if (r < 0) | |
4fbf50b3 LP |
792 | return r; |
793 | ||
117dcc57 | 794 | r = unit_watch_pid(UNIT(s), pid); |
8bb2d17d | 795 | if (r < 0) { |
4fbf50b3 | 796 | /* FIXME: we need to do something here */ |
f2341e0a | 797 | log_unit_warning_errno(UNIT(s), r, "Failed to watch PID "PID_FMT" from: %m", pid); |
8bb2d17d LP |
798 | return r; |
799 | } | |
800 | ||
801 | return 0; | |
4fbf50b3 LP |
802 | } |
803 | ||
034c6ed7 LP |
804 | static void service_set_state(Service *s, ServiceState state) { |
805 | ServiceState old_state; | |
e056b01d | 806 | const UnitActiveState *table; |
842129f5 | 807 | |
5cb5a6ff LP |
808 | assert(s); |
809 | ||
e056b01d LP |
810 | table = s->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table; |
811 | ||
034c6ed7 | 812 | old_state = s->state; |
5cb5a6ff | 813 | s->state = state; |
034c6ed7 | 814 | |
3a111838 MS |
815 | service_unwatch_pid_file(s); |
816 | ||
842129f5 LP |
817 | if (!IN_SET(state, |
818 | SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, | |
819 | SERVICE_RELOAD, | |
57614eb1 | 820 | SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
842129f5 LP |
821 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL, |
822 | SERVICE_AUTO_RESTART)) | |
718db961 | 823 | s->timer_event_source = sd_event_source_unref(s->timer_event_source); |
034c6ed7 | 824 | |
842129f5 LP |
825 | if (!IN_SET(state, |
826 | SERVICE_START, SERVICE_START_POST, | |
827 | SERVICE_RUNNING, SERVICE_RELOAD, | |
57614eb1 | 828 | SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
bf108e55 | 829 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) { |
5e94833f | 830 | service_unwatch_main_pid(s); |
867b3b7d LP |
831 | s->main_command = NULL; |
832 | } | |
034c6ed7 | 833 | |
842129f5 LP |
834 | if (!IN_SET(state, |
835 | SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, | |
836 | SERVICE_RELOAD, | |
57614eb1 | 837 | SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
842129f5 | 838 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) { |
5e94833f | 839 | service_unwatch_control_pid(s); |
034c6ed7 | 840 | s->control_command = NULL; |
a16e1123 | 841 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; |
e537352b | 842 | } |
034c6ed7 | 843 | |
a911bb9a LP |
844 | if (IN_SET(state, SERVICE_DEAD, SERVICE_FAILED, SERVICE_AUTO_RESTART)) |
845 | unit_unwatch_all_pids(UNIT(s)); | |
846 | ||
842129f5 LP |
847 | if (!IN_SET(state, |
848 | SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, | |
849 | SERVICE_RUNNING, SERVICE_RELOAD, | |
57614eb1 LP |
850 | SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
851 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL) && | |
1124fe6f | 852 | !(state == SERVICE_DEAD && UNIT(s)->job)) { |
4f2d528d | 853 | service_close_socket_fd(s); |
6cf6bbc2 LP |
854 | service_connection_unref(s); |
855 | } | |
4f2d528d | 856 | |
7596e9e1 | 857 | if (!IN_SET(state, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) |
a6927d7f MO |
858 | service_stop_watchdog(s); |
859 | ||
f6023656 LP |
860 | /* For the inactive states unit_notify() will trim the cgroup, |
861 | * but for exit we have to do that ourselves... */ | |
1124fe6f | 862 | if (state == SERVICE_EXITED && UNIT(s)->manager->n_reloading <= 0) |
b1491eba | 863 | unit_destroy_cgroup_if_empty(UNIT(s)); |
f6023656 | 864 | |
9cd86184 OB |
865 | /* For remain_after_exit services, let's see if we can "release" the |
866 | * hold on the console, since unit_notify() only does that in case of | |
867 | * change of state */ | |
f49650ce LP |
868 | if (state == SERVICE_EXITED && |
869 | s->remain_after_exit && | |
9cd86184 | 870 | UNIT(s)->manager->n_on_console > 0) { |
f49650ce LP |
871 | |
872 | ExecContext *ec; | |
873 | ||
874 | ec = unit_get_exec_context(UNIT(s)); | |
9cd86184 OB |
875 | if (ec && exec_context_may_touch_console(ec)) { |
876 | Manager *m = UNIT(s)->manager; | |
877 | ||
878 | m->n_on_console --; | |
879 | if (m->n_on_console == 0) | |
880 | /* unset no_console_output flag, since the console is free */ | |
881 | m->no_console_output = false; | |
882 | } | |
883 | } | |
884 | ||
e537352b | 885 | if (old_state != state) |
f2341e0a | 886 | log_unit_debug(UNIT(s), "Changed %s -> %s", service_state_to_string(old_state), service_state_to_string(state)); |
acbb0225 | 887 | |
e056b01d | 888 | unit_notify(UNIT(s), table[old_state], table[state], s->reload_result == SERVICE_SUCCESS); |
f42806df | 889 | s->reload_result = SERVICE_SUCCESS; |
034c6ed7 LP |
890 | } |
891 | ||
be847e82 | 892 | static int service_coldplug(Unit *u) { |
a16e1123 LP |
893 | Service *s = SERVICE(u); |
894 | int r; | |
895 | ||
896 | assert(s); | |
897 | assert(s->state == SERVICE_DEAD); | |
898 | ||
899 | if (s->deserialized_state != s->state) { | |
900 | ||
bf108e55 LP |
901 | if (IN_SET(s->deserialized_state, |
902 | SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, | |
903 | SERVICE_RELOAD, | |
57614eb1 | 904 | SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
bf108e55 | 905 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) { |
92c1622e LP |
906 | |
907 | usec_t k; | |
6c12b52e | 908 | |
bf108e55 | 909 | k = IN_SET(s->deserialized_state, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, SERVICE_RELOAD) ? s->timeout_start_usec : s->timeout_stop_usec; |
e558336f | 910 | |
92c1622e LP |
911 | /* For the start/stop timeouts 0 means off */ |
912 | if (k > 0) { | |
913 | r = service_arm_timer(s, k); | |
36697dc0 | 914 | if (r < 0) |
e558336f LP |
915 | return r; |
916 | } | |
917 | } | |
a16e1123 | 918 | |
92c1622e LP |
919 | if (s->deserialized_state == SERVICE_AUTO_RESTART) { |
920 | ||
921 | /* The restart timeouts 0 means immediately */ | |
922 | r = service_arm_timer(s, s->restart_usec); | |
923 | if (r < 0) | |
924 | return r; | |
925 | } | |
926 | ||
9f5650ae | 927 | if (pid_is_unwaited(s->main_pid) && |
bf108e55 LP |
928 | ((s->deserialized_state == SERVICE_START && IN_SET(s->type, SERVICE_FORKING, SERVICE_DBUS, SERVICE_ONESHOT, SERVICE_NOTIFY)) || |
929 | IN_SET(s->deserialized_state, | |
930 | SERVICE_START, SERVICE_START_POST, | |
931 | SERVICE_RUNNING, SERVICE_RELOAD, | |
57614eb1 | 932 | SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
bf108e55 LP |
933 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL))) { |
934 | r = unit_watch_pid(UNIT(s), s->main_pid); | |
935 | if (r < 0) | |
936 | return r; | |
937 | } | |
a16e1123 | 938 | |
9f5650ae | 939 | if (pid_is_unwaited(s->control_pid) && |
bf108e55 LP |
940 | IN_SET(s->deserialized_state, |
941 | SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, | |
942 | SERVICE_RELOAD, | |
57614eb1 | 943 | SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
bf108e55 LP |
944 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) { |
945 | r = unit_watch_pid(UNIT(s), s->control_pid); | |
946 | if (r < 0) | |
947 | return r; | |
948 | } | |
a16e1123 | 949 | |
a911bb9a LP |
950 | if (!IN_SET(s->deserialized_state, SERVICE_DEAD, SERVICE_FAILED, SERVICE_AUTO_RESTART)) |
951 | unit_watch_all_pids(UNIT(s)); | |
952 | ||
842129f5 LP |
953 | if (IN_SET(s->deserialized_state, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) |
954 | service_start_watchdog(s); | |
bb242b7b | 955 | |
a16e1123 LP |
956 | service_set_state(s, s->deserialized_state); |
957 | } | |
92c1622e | 958 | |
a16e1123 LP |
959 | return 0; |
960 | } | |
961 | ||
44d8db9e | 962 | static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) { |
a354329f LP |
963 | _cleanup_free_ int *rfds = NULL; |
964 | unsigned rn_fds = 0; | |
44d8db9e LP |
965 | Iterator i; |
966 | int r; | |
57020a3a | 967 | Unit *u; |
44d8db9e LP |
968 | |
969 | assert(s); | |
970 | assert(fds); | |
971 | assert(n_fds); | |
972 | ||
6cf6bbc2 LP |
973 | if (s->socket_fd >= 0) |
974 | return 0; | |
975 | ||
1124fe6f | 976 | SET_FOREACH(u, UNIT(s)->dependencies[UNIT_TRIGGERED_BY], i) { |
44d8db9e LP |
977 | int *cfds; |
978 | unsigned cn_fds; | |
57020a3a LP |
979 | Socket *sock; |
980 | ||
ac155bb8 | 981 | if (u->type != UNIT_SOCKET) |
57020a3a LP |
982 | continue; |
983 | ||
984 | sock = SOCKET(u); | |
44d8db9e | 985 | |
117dcc57 ZJS |
986 | r = socket_collect_fds(sock, &cfds, &cn_fds); |
987 | if (r < 0) | |
a354329f | 988 | return r; |
44d8db9e | 989 | |
a354329f LP |
990 | if (cn_fds <= 0) { |
991 | free(cfds); | |
44d8db9e | 992 | continue; |
a354329f | 993 | } |
44d8db9e LP |
994 | |
995 | if (!rfds) { | |
996 | rfds = cfds; | |
997 | rn_fds = cn_fds; | |
998 | } else { | |
999 | int *t; | |
1000 | ||
a354329f | 1001 | t = realloc(rfds, (rn_fds + cn_fds) * sizeof(int)); |
117dcc57 | 1002 | if (!t) { |
44d8db9e | 1003 | free(cfds); |
a354329f | 1004 | return -ENOMEM; |
44d8db9e LP |
1005 | } |
1006 | ||
a354329f LP |
1007 | memcpy(t + rn_fds, cfds, cn_fds * sizeof(int)); |
1008 | rfds = t; | |
1009 | rn_fds += cn_fds; | |
1010 | ||
44d8db9e LP |
1011 | free(cfds); |
1012 | ||
44d8db9e LP |
1013 | } |
1014 | } | |
1015 | ||
a354329f LP |
1016 | if (s->n_fd_store > 0) { |
1017 | ServiceFDStore *fs; | |
1018 | int *t; | |
1019 | ||
1020 | t = realloc(rfds, (rn_fds + s->n_fd_store) * sizeof(int)); | |
1021 | if (!t) | |
1022 | return -ENOMEM; | |
1023 | ||
1024 | rfds = t; | |
1025 | LIST_FOREACH(fd_store, fs, s->fd_store) | |
1026 | rfds[rn_fds++] = fs->fd; | |
1027 | } | |
1028 | ||
44d8db9e LP |
1029 | *fds = rfds; |
1030 | *n_fds = rn_fds; | |
3e33402a | 1031 | |
a354329f | 1032 | rfds = NULL; |
44d8db9e | 1033 | return 0; |
44d8db9e LP |
1034 | } |
1035 | ||
81a2b7ce LP |
1036 | static int service_spawn( |
1037 | Service *s, | |
1038 | ExecCommand *c, | |
21b2ce39 | 1039 | usec_t timeout, |
81a2b7ce LP |
1040 | bool pass_fds, |
1041 | bool apply_permissions, | |
1042 | bool apply_chroot, | |
1e3ad081 | 1043 | bool apply_tty_stdin, |
ecedd90f | 1044 | bool is_control, |
81a2b7ce LP |
1045 | pid_t *_pid) { |
1046 | ||
034c6ed7 LP |
1047 | pid_t pid; |
1048 | int r; | |
117dcc57 | 1049 | int *fds = NULL; |
7fd1b19b | 1050 | _cleanup_free_ int *fdsbuf = NULL; |
2105e76a | 1051 | unsigned n_fds = 0, n_env = 0; |
e44da745 | 1052 | _cleanup_free_ char *bus_endpoint_path = NULL; |
7fd1b19b | 1053 | _cleanup_strv_free_ char |
117dcc57 | 1054 | **argv = NULL, **final_env = NULL, **our_env = NULL; |
4ad49000 | 1055 | const char *path; |
9fa95f85 | 1056 | ExecParameters exec_params = { |
6f856a09 LP |
1057 | .apply_permissions = apply_permissions, |
1058 | .apply_chroot = apply_chroot, | |
1059 | .apply_tty_stdin = apply_tty_stdin, | |
1060 | .bus_endpoint_fd = -1, | |
16115b0a | 1061 | .selinux_context_net = s->socket_fd_selinux_context_net |
9fa95f85 | 1062 | }; |
034c6ed7 LP |
1063 | |
1064 | assert(s); | |
1065 | assert(c); | |
1066 | assert(_pid); | |
1067 | ||
5ad096b3 LP |
1068 | (void) unit_realize_cgroup(UNIT(s)); |
1069 | if (s->reset_cpu_usage) { | |
1070 | (void) unit_reset_cpu_usage(UNIT(s)); | |
1071 | s->reset_cpu_usage = false; | |
1072 | } | |
4ad49000 | 1073 | |
613b411c LP |
1074 | r = unit_setup_exec_runtime(UNIT(s)); |
1075 | if (r < 0) | |
1076 | goto fail; | |
1077 | ||
6cf6bbc2 LP |
1078 | if (pass_fds || |
1079 | s->exec_context.std_input == EXEC_INPUT_SOCKET || | |
1080 | s->exec_context.std_output == EXEC_OUTPUT_SOCKET || | |
1081 | s->exec_context.std_error == EXEC_OUTPUT_SOCKET) { | |
1082 | ||
4f2d528d LP |
1083 | if (s->socket_fd >= 0) { |
1084 | fds = &s->socket_fd; | |
1085 | n_fds = 1; | |
6cf6bbc2 | 1086 | } else { |
117dcc57 ZJS |
1087 | r = service_collect_fds(s, &fdsbuf, &n_fds); |
1088 | if (r < 0) | |
6cf6bbc2 LP |
1089 | goto fail; |
1090 | ||
1091 | fds = fdsbuf; | |
1092 | } | |
4f2d528d | 1093 | } |
44d8db9e | 1094 | |
21b2ce39 LP |
1095 | if (timeout > 0) { |
1096 | r = service_arm_timer(s, timeout); | |
92c1622e LP |
1097 | if (r < 0) |
1098 | goto fail; | |
1099 | } else | |
1100 | s->timer_event_source = sd_event_source_unref(s->timer_event_source); | |
034c6ed7 | 1101 | |
19f6d710 LP |
1102 | r = unit_full_printf_strv(UNIT(s), c->argv, &argv); |
1103 | if (r < 0) | |
9e2f7c11 | 1104 | goto fail; |
9e2f7c11 | 1105 | |
3b1c5241 | 1106 | our_env = new0(char*, 6); |
97ae63e2 | 1107 | if (!our_env) { |
2105e76a LP |
1108 | r = -ENOMEM; |
1109 | goto fail; | |
1110 | } | |
c952c6ec | 1111 | |
a158dbf1 | 1112 | if (is_control ? s->notify_access == NOTIFY_ALL : s->notify_access != NOTIFY_NONE) |
1124fe6f | 1113 | if (asprintf(our_env + n_env++, "NOTIFY_SOCKET=%s", UNIT(s)->manager->notify_socket) < 0) { |
c952c6ec LP |
1114 | r = -ENOMEM; |
1115 | goto fail; | |
1116 | } | |
1117 | ||
2105e76a | 1118 | if (s->main_pid > 0) |
ccd06097 | 1119 | if (asprintf(our_env + n_env++, "MAINPID="PID_FMT, s->main_pid) < 0) { |
c952c6ec LP |
1120 | r = -ENOMEM; |
1121 | goto fail; | |
1122 | } | |
2105e76a | 1123 | |
b2c23da8 | 1124 | if (UNIT(s)->manager->running_as != MANAGER_SYSTEM) |
ccd06097 | 1125 | if (asprintf(our_env + n_env++, "MANAGERPID="PID_FMT, getpid()) < 0) { |
97ae63e2 LP |
1126 | r = -ENOMEM; |
1127 | goto fail; | |
1128 | } | |
1129 | ||
3b1c5241 SL |
1130 | if (UNIT_DEREF(s->accept_socket)) { |
1131 | union sockaddr_union sa; | |
1132 | socklen_t salen = sizeof(sa); | |
1133 | ||
1134 | r = getpeername(s->socket_fd, &sa.sa, &salen); | |
1135 | if (r < 0) { | |
1136 | r = -errno; | |
1137 | goto fail; | |
1138 | } | |
1139 | ||
1140 | if (IN_SET(sa.sa.sa_family, AF_INET, AF_INET6)) { | |
1141 | _cleanup_free_ char *addr = NULL; | |
1142 | char *t; | |
1143 | int port; | |
1144 | ||
1145 | r = sockaddr_pretty(&sa.sa, salen, true, false, &addr); | |
1146 | if (r < 0) | |
1147 | goto fail; | |
1148 | ||
1149 | t = strappend("REMOTE_ADDR=", addr); | |
1150 | if (!t) { | |
1151 | r = -ENOMEM; | |
1152 | goto fail; | |
1153 | } | |
1154 | our_env[n_env++] = t; | |
1155 | ||
1156 | port = sockaddr_port(&sa.sa); | |
1157 | if (port < 0) { | |
1158 | r = port; | |
1159 | goto fail; | |
1160 | } | |
1161 | ||
1162 | if (asprintf(&t, "REMOTE_PORT=%u", port) < 0) { | |
1163 | r = -ENOMEM; | |
1164 | goto fail; | |
1165 | } | |
1166 | our_env[n_env++] = t; | |
1167 | } | |
1168 | } | |
1169 | ||
97ae63e2 LP |
1170 | final_env = strv_env_merge(2, UNIT(s)->manager->environment, our_env, NULL); |
1171 | if (!final_env) { | |
2105e76a LP |
1172 | r = -ENOMEM; |
1173 | goto fail; | |
1174 | } | |
c952c6ec | 1175 | |
4ad49000 | 1176 | if (is_control && UNIT(s)->cgroup_path) { |
63c372cb | 1177 | path = strjoina(UNIT(s)->cgroup_path, "/control"); |
4ad49000 LP |
1178 | cg_create(SYSTEMD_CGROUP_CONTROLLER, path); |
1179 | } else | |
1180 | path = UNIT(s)->cgroup_path; | |
1181 | ||
e44da745 | 1182 | if (s->exec_context.bus_endpoint) { |
b2c23da8 | 1183 | r = bus_kernel_create_endpoint(UNIT(s)->manager->running_as == MANAGER_SYSTEM ? "system" : "user", |
e44da745 DM |
1184 | UNIT(s)->id, &bus_endpoint_path); |
1185 | if (r < 0) | |
1186 | goto fail; | |
1187 | ||
1188 | /* Pass the fd to the exec_params so that the child process can upload the policy. | |
1189 | * Keep a reference to the fd in the service, so the endpoint is kept alive as long | |
1190 | * as the service is running. */ | |
1191 | exec_params.bus_endpoint_fd = s->bus_endpoint_fd = r; | |
1192 | } | |
e44da745 | 1193 | |
9fa95f85 DM |
1194 | exec_params.argv = argv; |
1195 | exec_params.fds = fds; | |
1196 | exec_params.n_fds = n_fds; | |
1197 | exec_params.environment = final_env; | |
1198 | exec_params.confirm_spawn = UNIT(s)->manager->confirm_spawn; | |
1199 | exec_params.cgroup_supported = UNIT(s)->manager->cgroup_supported; | |
1200 | exec_params.cgroup_path = path; | |
a931ad47 | 1201 | exec_params.cgroup_delegate = s->cgroup_context.delegate; |
9fa95f85 | 1202 | exec_params.runtime_prefix = manager_get_runtime_prefix(UNIT(s)->manager); |
9fa95f85 | 1203 | exec_params.watchdog_usec = s->watchdog_usec; |
e44da745 | 1204 | exec_params.bus_endpoint_path = bus_endpoint_path; |
9fa95f85 DM |
1205 | if (s->type == SERVICE_IDLE) |
1206 | exec_params.idle_pipe = UNIT(s)->manager->idle_pipe; | |
1207 | ||
f2341e0a LP |
1208 | r = exec_spawn(UNIT(s), |
1209 | c, | |
9e2f7c11 | 1210 | &s->exec_context, |
9fa95f85 | 1211 | &exec_params, |
613b411c | 1212 | s->exec_runtime, |
9e2f7c11 | 1213 | &pid); |
9e2f7c11 | 1214 | if (r < 0) |
034c6ed7 LP |
1215 | goto fail; |
1216 | ||
117dcc57 ZJS |
1217 | r = unit_watch_pid(UNIT(s), pid); |
1218 | if (r < 0) | |
034c6ed7 LP |
1219 | /* FIXME: we need to do something here */ |
1220 | goto fail; | |
1221 | ||
1222 | *_pid = pid; | |
1223 | ||
5cb5a6ff | 1224 | return 0; |
034c6ed7 LP |
1225 | |
1226 | fail: | |
1227 | if (timeout) | |
718db961 | 1228 | s->timer_event_source = sd_event_source_unref(s->timer_event_source); |
034c6ed7 LP |
1229 | |
1230 | return r; | |
1231 | } | |
1232 | ||
80876c20 LP |
1233 | static int main_pid_good(Service *s) { |
1234 | assert(s); | |
1235 | ||
1236 | /* Returns 0 if the pid is dead, 1 if it is good, -1 if we | |
1237 | * don't know */ | |
1238 | ||
fc08079e | 1239 | /* If we know the pid file, then let's just check if it is |
80876c20 | 1240 | * still valid */ |
6dfa5494 LP |
1241 | if (s->main_pid_known) { |
1242 | ||
1243 | /* If it's an alien child let's check if it is still | |
1244 | * alive ... */ | |
62220cf7 | 1245 | if (s->main_pid_alien && s->main_pid > 0) |
9f5650ae | 1246 | return pid_is_alive(s->main_pid); |
6dfa5494 LP |
1247 | |
1248 | /* .. otherwise assume we'll get a SIGCHLD for it, | |
1249 | * which we really should wait for to collect exit | |
1250 | * status and code */ | |
80876c20 | 1251 | return s->main_pid > 0; |
6dfa5494 | 1252 | } |
80876c20 LP |
1253 | |
1254 | /* We don't know the pid */ | |
1255 | return -EAGAIN; | |
1256 | } | |
1257 | ||
44a6b1b6 | 1258 | _pure_ static int control_pid_good(Service *s) { |
80876c20 LP |
1259 | assert(s); |
1260 | ||
1261 | return s->control_pid > 0; | |
1262 | } | |
1263 | ||
1264 | static int cgroup_good(Service *s) { | |
1265 | int r; | |
1266 | ||
1267 | assert(s); | |
1268 | ||
4ad49000 LP |
1269 | if (!UNIT(s)->cgroup_path) |
1270 | return 0; | |
1271 | ||
1272 | r = cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, UNIT(s)->cgroup_path, true); | |
117dcc57 | 1273 | if (r < 0) |
80876c20 LP |
1274 | return r; |
1275 | ||
1276 | return !r; | |
1277 | } | |
1278 | ||
a509f0e6 LP |
1279 | static bool service_shall_restart(Service *s) { |
1280 | assert(s); | |
1281 | ||
1282 | /* Don't restart after manual stops */ | |
1283 | if (s->forbid_restart) | |
1284 | return false; | |
1285 | ||
1286 | /* Never restart if this is configured as special exception */ | |
1287 | if (exit_status_set_test(&s->restart_prevent_status, s->main_exec_status.code, s->main_exec_status.status)) | |
1288 | return false; | |
1289 | ||
1290 | /* Restart if the exit code/status are configured as restart triggers */ | |
1291 | if (exit_status_set_test(&s->restart_force_status, s->main_exec_status.code, s->main_exec_status.status)) | |
1292 | return true; | |
1293 | ||
1294 | switch (s->restart) { | |
1295 | ||
1296 | case SERVICE_RESTART_NO: | |
1297 | return false; | |
1298 | ||
1299 | case SERVICE_RESTART_ALWAYS: | |
1300 | return true; | |
1301 | ||
1302 | case SERVICE_RESTART_ON_SUCCESS: | |
1303 | return s->result == SERVICE_SUCCESS; | |
1304 | ||
1305 | case SERVICE_RESTART_ON_FAILURE: | |
1306 | return s->result != SERVICE_SUCCESS; | |
1307 | ||
1308 | case SERVICE_RESTART_ON_ABNORMAL: | |
1309 | return !IN_SET(s->result, SERVICE_SUCCESS, SERVICE_FAILURE_EXIT_CODE); | |
1310 | ||
1311 | case SERVICE_RESTART_ON_WATCHDOG: | |
1312 | return s->result == SERVICE_FAILURE_WATCHDOG; | |
1313 | ||
1314 | case SERVICE_RESTART_ON_ABORT: | |
1315 | return IN_SET(s->result, SERVICE_FAILURE_SIGNAL, SERVICE_FAILURE_CORE_DUMP); | |
1316 | ||
1317 | default: | |
1318 | assert_not_reached("unknown restart setting"); | |
1319 | } | |
1320 | } | |
1321 | ||
f42806df | 1322 | static void service_enter_dead(Service *s, ServiceResult f, bool allow_restart) { |
034c6ed7 LP |
1323 | int r; |
1324 | assert(s); | |
1325 | ||
f42806df LP |
1326 | if (f != SERVICE_SUCCESS) |
1327 | s->result = f; | |
034c6ed7 | 1328 | |
0c7f15b3 MS |
1329 | service_set_state(s, s->result != SERVICE_SUCCESS ? SERVICE_FAILED : SERVICE_DEAD); |
1330 | ||
2928b0a8 | 1331 | if (s->result != SERVICE_SUCCESS) { |
f2341e0a | 1332 | log_unit_warning(UNIT(s), "Failed with result '%s'.", service_result_to_string(s->result)); |
2928b0a8 LP |
1333 | failure_action(UNIT(s)->manager, s->failure_action, s->reboot_arg); |
1334 | } | |
93ae25e6 | 1335 | |
a509f0e6 | 1336 | if (allow_restart && service_shall_restart(s)) { |
034c6ed7 | 1337 | |
718db961 | 1338 | r = service_arm_timer(s, s->restart_usec); |
f42806df | 1339 | if (r < 0) |
034c6ed7 LP |
1340 | goto fail; |
1341 | ||
1342 | service_set_state(s, SERVICE_AUTO_RESTART); | |
0c7f15b3 | 1343 | } |
034c6ed7 | 1344 | |
f2341e0a | 1345 | /* The next restart might not be a manual stop, hence reset the flag indicating manual stops */ |
47342320 LP |
1346 | s->forbid_restart = false; |
1347 | ||
e66cf1a3 | 1348 | /* We want fresh tmpdirs in case service is started again immediately */ |
613b411c LP |
1349 | exec_runtime_destroy(s->exec_runtime); |
1350 | s->exec_runtime = exec_runtime_unref(s->exec_runtime); | |
c17ec25e | 1351 | |
e66cf1a3 LP |
1352 | /* Also, remove the runtime directory in */ |
1353 | exec_context_destroy_runtime_directory(&s->exec_context, manager_get_runtime_prefix(UNIT(s)->manager)); | |
1354 | ||
9285c9ff LN |
1355 | /* Try to delete the pid file. At this point it will be |
1356 | * out-of-date, and some software might be confused by it, so | |
1357 | * let's remove it. */ | |
1358 | if (s->pid_file) | |
1359 | unlink_noerrno(s->pid_file); | |
1360 | ||
034c6ed7 LP |
1361 | return; |
1362 | ||
1363 | fail: | |
f2341e0a | 1364 | log_unit_warning_errno(UNIT(s), r, "Failed to run install restart timer: %m"); |
f42806df | 1365 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false); |
034c6ed7 LP |
1366 | } |
1367 | ||
f42806df | 1368 | static void service_enter_stop_post(Service *s, ServiceResult f) { |
034c6ed7 LP |
1369 | int r; |
1370 | assert(s); | |
1371 | ||
f42806df LP |
1372 | if (f != SERVICE_SUCCESS) |
1373 | s->result = f; | |
034c6ed7 | 1374 | |
5e94833f | 1375 | service_unwatch_control_pid(s); |
a911bb9a | 1376 | unit_watch_all_pids(UNIT(s)); |
5e94833f | 1377 | |
117dcc57 ZJS |
1378 | s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST]; |
1379 | if (s->control_command) { | |
867b3b7d LP |
1380 | s->control_command_id = SERVICE_EXEC_STOP_POST; |
1381 | ||
ecedd90f LP |
1382 | r = service_spawn(s, |
1383 | s->control_command, | |
21b2ce39 | 1384 | s->timeout_stop_usec, |
ecedd90f LP |
1385 | false, |
1386 | !s->permissions_start_only, | |
1387 | !s->root_directory_start_only, | |
1388 | true, | |
ecedd90f LP |
1389 | true, |
1390 | &s->control_pid); | |
1391 | if (r < 0) | |
034c6ed7 LP |
1392 | goto fail; |
1393 | ||
80876c20 LP |
1394 | service_set_state(s, SERVICE_STOP_POST); |
1395 | } else | |
ac84d1fb | 1396 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_SUCCESS); |
034c6ed7 LP |
1397 | |
1398 | return; | |
1399 | ||
1400 | fail: | |
f2341e0a | 1401 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'stop-post' task: %m"); |
f42806df | 1402 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
1403 | } |
1404 | ||
4940c0b0 LP |
1405 | static int state_to_kill_operation(ServiceState state) { |
1406 | switch (state) { | |
1407 | ||
1408 | case SERVICE_STOP_SIGABRT: | |
1409 | return KILL_ABORT; | |
1410 | ||
1411 | case SERVICE_STOP_SIGTERM: | |
1412 | case SERVICE_FINAL_SIGTERM: | |
1413 | return KILL_TERMINATE; | |
1414 | ||
1415 | case SERVICE_STOP_SIGKILL: | |
1416 | case SERVICE_FINAL_SIGKILL: | |
1417 | return KILL_KILL; | |
1418 | ||
1419 | default: | |
1420 | return _KILL_OPERATION_INVALID; | |
1421 | } | |
1422 | } | |
1423 | ||
f42806df | 1424 | static void service_enter_signal(Service *s, ServiceState state, ServiceResult f) { |
034c6ed7 | 1425 | int r; |
034c6ed7 LP |
1426 | |
1427 | assert(s); | |
1428 | ||
f42806df LP |
1429 | if (f != SERVICE_SUCCESS) |
1430 | s->result = f; | |
034c6ed7 | 1431 | |
a911bb9a LP |
1432 | unit_watch_all_pids(UNIT(s)); |
1433 | ||
cd2086fe LP |
1434 | r = unit_kill_context( |
1435 | UNIT(s), | |
1436 | &s->kill_context, | |
4940c0b0 | 1437 | state_to_kill_operation(state), |
cd2086fe LP |
1438 | s->main_pid, |
1439 | s->control_pid, | |
1440 | s->main_pid_alien); | |
ac84d1fb | 1441 | |
cd2086fe LP |
1442 | if (r < 0) |
1443 | goto fail; | |
034c6ed7 | 1444 | |
cd2086fe | 1445 | if (r > 0) { |
d568a335 | 1446 | if (s->timeout_stop_usec > 0) { |
718db961 | 1447 | r = service_arm_timer(s, s->timeout_stop_usec); |
d568a335 | 1448 | if (r < 0) |
e558336f | 1449 | goto fail; |
d568a335 | 1450 | } |
d6ea93e3 | 1451 | |
80876c20 | 1452 | service_set_state(s, state); |
1db0db4b | 1453 | } else if (IN_SET(state, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM) && s->kill_context.send_sigkill) |
ac84d1fb | 1454 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_SUCCESS); |
1db0db4b | 1455 | else if (IN_SET(state, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL)) |
f42806df | 1456 | service_enter_stop_post(s, SERVICE_SUCCESS); |
1db0db4b | 1457 | else if (state == SERVICE_FINAL_SIGTERM && s->kill_context.send_sigkill) |
ac84d1fb | 1458 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_SUCCESS); |
80876c20 | 1459 | else |
f42806df | 1460 | service_enter_dead(s, SERVICE_SUCCESS, true); |
034c6ed7 LP |
1461 | |
1462 | return; | |
1463 | ||
1464 | fail: | |
f2341e0a | 1465 | log_unit_warning_errno(UNIT(s), r, "Failed to kill processes: %m"); |
034c6ed7 | 1466 | |
a00973af | 1467 | if (IN_SET(state, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL)) |
f42806df | 1468 | service_enter_stop_post(s, SERVICE_FAILURE_RESOURCES); |
034c6ed7 | 1469 | else |
f42806df | 1470 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true); |
034c6ed7 LP |
1471 | } |
1472 | ||
308d72dc LP |
1473 | static void service_enter_stop_by_notify(Service *s) { |
1474 | assert(s); | |
1475 | ||
1476 | unit_watch_all_pids(UNIT(s)); | |
1477 | ||
1478 | if (s->timeout_stop_usec > 0) | |
1479 | service_arm_timer(s, s->timeout_stop_usec); | |
1480 | ||
6041a7ee MS |
1481 | /* The service told us it's stopping, so it's as if we SIGTERM'd it. */ |
1482 | service_set_state(s, SERVICE_STOP_SIGTERM); | |
308d72dc LP |
1483 | } |
1484 | ||
f42806df | 1485 | static void service_enter_stop(Service *s, ServiceResult f) { |
034c6ed7 | 1486 | int r; |
5925dd3c | 1487 | |
034c6ed7 LP |
1488 | assert(s); |
1489 | ||
f42806df LP |
1490 | if (f != SERVICE_SUCCESS) |
1491 | s->result = f; | |
034c6ed7 | 1492 | |
5e94833f | 1493 | service_unwatch_control_pid(s); |
a911bb9a | 1494 | unit_watch_all_pids(UNIT(s)); |
5e94833f | 1495 | |
117dcc57 ZJS |
1496 | s->control_command = s->exec_command[SERVICE_EXEC_STOP]; |
1497 | if (s->control_command) { | |
867b3b7d LP |
1498 | s->control_command_id = SERVICE_EXEC_STOP; |
1499 | ||
ecedd90f LP |
1500 | r = service_spawn(s, |
1501 | s->control_command, | |
21b2ce39 | 1502 | s->timeout_stop_usec, |
ecedd90f LP |
1503 | false, |
1504 | !s->permissions_start_only, | |
1505 | !s->root_directory_start_only, | |
1506 | false, | |
ecedd90f LP |
1507 | true, |
1508 | &s->control_pid); | |
1509 | if (r < 0) | |
034c6ed7 LP |
1510 | goto fail; |
1511 | ||
80876c20 LP |
1512 | service_set_state(s, SERVICE_STOP); |
1513 | } else | |
f42806df | 1514 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS); |
034c6ed7 LP |
1515 | |
1516 | return; | |
1517 | ||
1518 | fail: | |
f2341e0a | 1519 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'stop' task: %m"); |
f42806df | 1520 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
1521 | } |
1522 | ||
957c3cf9 LP |
1523 | static bool service_good(Service *s) { |
1524 | int main_pid_ok; | |
1525 | assert(s); | |
1526 | ||
1527 | if (s->type == SERVICE_DBUS && !s->bus_name_good) | |
1528 | return false; | |
1529 | ||
1530 | main_pid_ok = main_pid_good(s); | |
1531 | if (main_pid_ok > 0) /* It's alive */ | |
1532 | return true; | |
1533 | if (main_pid_ok == 0) /* It's dead */ | |
1534 | return false; | |
1535 | ||
1536 | /* OK, we don't know anything about the main PID, maybe | |
1537 | * because there is none. Let's check the control group | |
1538 | * instead. */ | |
1539 | ||
1540 | return cgroup_good(s) != 0; | |
1541 | } | |
1542 | ||
f42806df | 1543 | static void service_enter_running(Service *s, ServiceResult f) { |
80876c20 LP |
1544 | assert(s); |
1545 | ||
f42806df LP |
1546 | if (f != SERVICE_SUCCESS) |
1547 | s->result = f; | |
80876c20 | 1548 | |
957c3cf9 | 1549 | if (service_good(s)) { |
308d72dc LP |
1550 | |
1551 | /* If there are any queued up sd_notify() | |
1552 | * notifications, process them now */ | |
1553 | if (s->notify_state == NOTIFY_RELOADING) | |
1554 | service_enter_reload_by_notify(s); | |
1555 | else if (s->notify_state == NOTIFY_STOPPING) | |
1556 | service_enter_stop_by_notify(s); | |
1557 | else | |
1558 | service_set_state(s, SERVICE_RUNNING); | |
1559 | ||
1560 | } else if (s->remain_after_exit) | |
80876c20 LP |
1561 | service_set_state(s, SERVICE_EXITED); |
1562 | else | |
f42806df | 1563 | service_enter_stop(s, SERVICE_SUCCESS); |
80876c20 LP |
1564 | } |
1565 | ||
034c6ed7 LP |
1566 | static void service_enter_start_post(Service *s) { |
1567 | int r; | |
1568 | assert(s); | |
1569 | ||
5e94833f | 1570 | service_unwatch_control_pid(s); |
842129f5 | 1571 | service_reset_watchdog(s); |
bb242b7b | 1572 | |
117dcc57 ZJS |
1573 | s->control_command = s->exec_command[SERVICE_EXEC_START_POST]; |
1574 | if (s->control_command) { | |
867b3b7d LP |
1575 | s->control_command_id = SERVICE_EXEC_START_POST; |
1576 | ||
ecedd90f LP |
1577 | r = service_spawn(s, |
1578 | s->control_command, | |
21b2ce39 | 1579 | s->timeout_start_usec, |
ecedd90f LP |
1580 | false, |
1581 | !s->permissions_start_only, | |
1582 | !s->root_directory_start_only, | |
1583 | false, | |
ecedd90f LP |
1584 | true, |
1585 | &s->control_pid); | |
1586 | if (r < 0) | |
034c6ed7 LP |
1587 | goto fail; |
1588 | ||
80876c20 LP |
1589 | service_set_state(s, SERVICE_START_POST); |
1590 | } else | |
f42806df | 1591 | service_enter_running(s, SERVICE_SUCCESS); |
034c6ed7 LP |
1592 | |
1593 | return; | |
1594 | ||
1595 | fail: | |
f2341e0a | 1596 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'start-post' task: %m"); |
f42806df | 1597 | service_enter_stop(s, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
1598 | } |
1599 | ||
4ad49000 LP |
1600 | static void service_kill_control_processes(Service *s) { |
1601 | char *p; | |
1602 | ||
1603 | if (!UNIT(s)->cgroup_path) | |
1604 | return; | |
1605 | ||
63c372cb | 1606 | p = strjoina(UNIT(s)->cgroup_path, "/control"); |
4ad49000 LP |
1607 | cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, p, SIGKILL, true, true, true, NULL); |
1608 | } | |
1609 | ||
034c6ed7 | 1610 | static void service_enter_start(Service *s) { |
4ad49000 | 1611 | ExecCommand *c; |
034c6ed7 LP |
1612 | pid_t pid; |
1613 | int r; | |
1614 | ||
1615 | assert(s); | |
1616 | ||
41efeaec LP |
1617 | service_unwatch_control_pid(s); |
1618 | service_unwatch_main_pid(s); | |
80876c20 | 1619 | |
8f53a7b8 LP |
1620 | /* We want to ensure that nobody leaks processes from |
1621 | * START_PRE here, so let's go on a killing spree, People | |
1622 | * should not spawn long running processes from START_PRE. */ | |
4ad49000 | 1623 | service_kill_control_processes(s); |
8f53a7b8 | 1624 | |
867b3b7d LP |
1625 | if (s->type == SERVICE_FORKING) { |
1626 | s->control_command_id = SERVICE_EXEC_START; | |
1627 | c = s->control_command = s->exec_command[SERVICE_EXEC_START]; | |
1628 | ||
1629 | s->main_command = NULL; | |
1630 | } else { | |
1631 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; | |
1632 | s->control_command = NULL; | |
1633 | ||
1634 | c = s->main_command = s->exec_command[SERVICE_EXEC_START]; | |
1635 | } | |
34e9ba66 | 1636 | |
96fb8242 LP |
1637 | if (!c) { |
1638 | assert(s->type == SERVICE_ONESHOT); | |
1639 | service_enter_start_post(s); | |
1640 | return; | |
1641 | } | |
1642 | ||
ecedd90f LP |
1643 | r = service_spawn(s, |
1644 | c, | |
21b2ce39 | 1645 | IN_SET(s->type, SERVICE_FORKING, SERVICE_DBUS, SERVICE_NOTIFY, SERVICE_ONESHOT) ? s->timeout_start_usec : 0, |
ecedd90f LP |
1646 | true, |
1647 | true, | |
1648 | true, | |
1649 | true, | |
ecedd90f LP |
1650 | false, |
1651 | &pid); | |
1652 | if (r < 0) | |
034c6ed7 LP |
1653 | goto fail; |
1654 | ||
f2b68789 | 1655 | if (s->type == SERVICE_SIMPLE || s->type == SERVICE_IDLE) { |
034c6ed7 LP |
1656 | /* For simple services we immediately start |
1657 | * the START_POST binaries. */ | |
1658 | ||
5925dd3c | 1659 | service_set_main_pid(s, pid); |
034c6ed7 LP |
1660 | service_enter_start_post(s); |
1661 | ||
1662 | } else if (s->type == SERVICE_FORKING) { | |
1663 | ||
1664 | /* For forking services we wait until the start | |
1665 | * process exited. */ | |
1666 | ||
e55224ca | 1667 | s->control_pid = pid; |
80876c20 LP |
1668 | service_set_state(s, SERVICE_START); |
1669 | ||
34e9ba66 | 1670 | } else if (s->type == SERVICE_ONESHOT || |
8c47c732 LP |
1671 | s->type == SERVICE_DBUS || |
1672 | s->type == SERVICE_NOTIFY) { | |
7d55e835 | 1673 | |
34e9ba66 | 1674 | /* For oneshot services we wait until the start |
7d55e835 LP |
1675 | * process exited, too, but it is our main process. */ |
1676 | ||
05e343b7 | 1677 | /* For D-Bus services we know the main pid right away, |
8c47c732 LP |
1678 | * but wait for the bus name to appear on the |
1679 | * bus. Notify services are similar. */ | |
05e343b7 | 1680 | |
5925dd3c | 1681 | service_set_main_pid(s, pid); |
80876c20 | 1682 | service_set_state(s, SERVICE_START); |
034c6ed7 LP |
1683 | } else |
1684 | assert_not_reached("Unknown service type"); | |
1685 | ||
1686 | return; | |
1687 | ||
1688 | fail: | |
f2341e0a | 1689 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'start' task: %m"); |
f42806df | 1690 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
1691 | } |
1692 | ||
1693 | static void service_enter_start_pre(Service *s) { | |
1694 | int r; | |
1695 | ||
1696 | assert(s); | |
1697 | ||
5e94833f LP |
1698 | service_unwatch_control_pid(s); |
1699 | ||
117dcc57 ZJS |
1700 | s->control_command = s->exec_command[SERVICE_EXEC_START_PRE]; |
1701 | if (s->control_command) { | |
8f53a7b8 LP |
1702 | /* Before we start anything, let's clear up what might |
1703 | * be left from previous runs. */ | |
4ad49000 | 1704 | service_kill_control_processes(s); |
8f53a7b8 | 1705 | |
867b3b7d LP |
1706 | s->control_command_id = SERVICE_EXEC_START_PRE; |
1707 | ||
ecedd90f LP |
1708 | r = service_spawn(s, |
1709 | s->control_command, | |
21b2ce39 | 1710 | s->timeout_start_usec, |
ecedd90f LP |
1711 | false, |
1712 | !s->permissions_start_only, | |
1713 | !s->root_directory_start_only, | |
1714 | true, | |
ecedd90f LP |
1715 | true, |
1716 | &s->control_pid); | |
1717 | if (r < 0) | |
034c6ed7 LP |
1718 | goto fail; |
1719 | ||
80876c20 LP |
1720 | service_set_state(s, SERVICE_START_PRE); |
1721 | } else | |
034c6ed7 LP |
1722 | service_enter_start(s); |
1723 | ||
1724 | return; | |
1725 | ||
1726 | fail: | |
f2341e0a | 1727 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'start-pre' task: %m"); |
f42806df | 1728 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true); |
034c6ed7 LP |
1729 | } |
1730 | ||
1731 | static void service_enter_restart(Service *s) { | |
718db961 | 1732 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
034c6ed7 | 1733 | int r; |
398ef8ba | 1734 | |
034c6ed7 LP |
1735 | assert(s); |
1736 | ||
a8bb2e65 LP |
1737 | if (UNIT(s)->job && UNIT(s)->job->type == JOB_STOP) { |
1738 | /* Don't restart things if we are going down anyway */ | |
f2341e0a | 1739 | log_unit_info(UNIT(s), "Stop job pending for unit, delaying automatic restart."); |
2edfa366 | 1740 | |
718db961 | 1741 | r = service_arm_timer(s, s->restart_usec); |
a8bb2e65 | 1742 | if (r < 0) |
2edfa366 | 1743 | goto fail; |
feae8adb DW |
1744 | |
1745 | return; | |
2edfa366 LP |
1746 | } |
1747 | ||
48bb5876 DW |
1748 | /* Any units that are bound to this service must also be |
1749 | * restarted. We use JOB_RESTART (instead of the more obvious | |
1750 | * JOB_START) here so that those dependency jobs will be added | |
1751 | * as well. */ | |
1752 | r = manager_add_job(UNIT(s)->manager, JOB_RESTART, UNIT(s), JOB_FAIL, false, &error, NULL); | |
1753 | if (r < 0) | |
034c6ed7 LP |
1754 | goto fail; |
1755 | ||
a8bb2e65 LP |
1756 | /* Note that we stay in the SERVICE_AUTO_RESTART state here, |
1757 | * it will be canceled as part of the service_stop() call that | |
1758 | * is executed as part of JOB_RESTART. */ | |
1759 | ||
f2341e0a | 1760 | log_unit_debug(UNIT(s), "Scheduled restart job."); |
034c6ed7 LP |
1761 | return; |
1762 | ||
1763 | fail: | |
f2341e0a | 1764 | log_unit_warning(UNIT(s), "Failed to schedule restart job: %s", bus_error_message(&error, -r)); |
f42806df | 1765 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false); |
034c6ed7 LP |
1766 | } |
1767 | ||
308d72dc LP |
1768 | static void service_enter_reload_by_notify(Service *s) { |
1769 | assert(s); | |
1770 | ||
1771 | if (s->timeout_start_usec > 0) | |
1772 | service_arm_timer(s, s->timeout_start_usec); | |
1773 | ||
1774 | service_set_state(s, SERVICE_RELOAD); | |
1775 | } | |
1776 | ||
034c6ed7 LP |
1777 | static void service_enter_reload(Service *s) { |
1778 | int r; | |
1779 | ||
1780 | assert(s); | |
1781 | ||
5e94833f LP |
1782 | service_unwatch_control_pid(s); |
1783 | ||
117dcc57 ZJS |
1784 | s->control_command = s->exec_command[SERVICE_EXEC_RELOAD]; |
1785 | if (s->control_command) { | |
867b3b7d LP |
1786 | s->control_command_id = SERVICE_EXEC_RELOAD; |
1787 | ||
ecedd90f LP |
1788 | r = service_spawn(s, |
1789 | s->control_command, | |
21b2ce39 | 1790 | s->timeout_start_usec, |
ecedd90f LP |
1791 | false, |
1792 | !s->permissions_start_only, | |
1793 | !s->root_directory_start_only, | |
1794 | false, | |
ecedd90f LP |
1795 | true, |
1796 | &s->control_pid); | |
1797 | if (r < 0) | |
034c6ed7 LP |
1798 | goto fail; |
1799 | ||
80876c20 LP |
1800 | service_set_state(s, SERVICE_RELOAD); |
1801 | } else | |
f42806df | 1802 | service_enter_running(s, SERVICE_SUCCESS); |
034c6ed7 LP |
1803 | |
1804 | return; | |
1805 | ||
1806 | fail: | |
f2341e0a | 1807 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'reload' task: %m"); |
f42806df LP |
1808 | s->reload_result = SERVICE_FAILURE_RESOURCES; |
1809 | service_enter_running(s, SERVICE_SUCCESS); | |
034c6ed7 LP |
1810 | } |
1811 | ||
f42806df | 1812 | static void service_run_next_control(Service *s) { |
034c6ed7 LP |
1813 | int r; |
1814 | ||
1815 | assert(s); | |
1816 | assert(s->control_command); | |
1817 | assert(s->control_command->command_next); | |
1818 | ||
34e9ba66 | 1819 | assert(s->control_command_id != SERVICE_EXEC_START); |
034c6ed7 | 1820 | |
34e9ba66 | 1821 | s->control_command = s->control_command->command_next; |
5e94833f LP |
1822 | service_unwatch_control_pid(s); |
1823 | ||
ecedd90f LP |
1824 | r = service_spawn(s, |
1825 | s->control_command, | |
21b2ce39 | 1826 | IN_SET(s->state, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD) ? s->timeout_start_usec : s->timeout_stop_usec, |
ecedd90f LP |
1827 | false, |
1828 | !s->permissions_start_only, | |
1829 | !s->root_directory_start_only, | |
1830 | s->control_command_id == SERVICE_EXEC_START_PRE || | |
1831 | s->control_command_id == SERVICE_EXEC_STOP_POST, | |
ecedd90f LP |
1832 | true, |
1833 | &s->control_pid); | |
1834 | if (r < 0) | |
034c6ed7 LP |
1835 | goto fail; |
1836 | ||
1837 | return; | |
1838 | ||
1839 | fail: | |
f2341e0a | 1840 | log_unit_warning_errno(UNIT(s), r, "Failed to run next control task: %m"); |
034c6ed7 | 1841 | |
80876c20 | 1842 | if (s->state == SERVICE_START_PRE) |
f42806df | 1843 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES); |
80876c20 | 1844 | else if (s->state == SERVICE_STOP) |
f42806df | 1845 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 | 1846 | else if (s->state == SERVICE_STOP_POST) |
f42806df | 1847 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true); |
e2f3b44c | 1848 | else if (s->state == SERVICE_RELOAD) { |
f42806df LP |
1849 | s->reload_result = SERVICE_FAILURE_RESOURCES; |
1850 | service_enter_running(s, SERVICE_SUCCESS); | |
e2f3b44c | 1851 | } else |
f42806df | 1852 | service_enter_stop(s, SERVICE_FAILURE_RESOURCES); |
5cb5a6ff LP |
1853 | } |
1854 | ||
f42806df | 1855 | static void service_run_next_main(Service *s) { |
34e9ba66 LP |
1856 | pid_t pid; |
1857 | int r; | |
1858 | ||
1859 | assert(s); | |
867b3b7d LP |
1860 | assert(s->main_command); |
1861 | assert(s->main_command->command_next); | |
1862 | assert(s->type == SERVICE_ONESHOT); | |
34e9ba66 | 1863 | |
867b3b7d | 1864 | s->main_command = s->main_command->command_next; |
34e9ba66 LP |
1865 | service_unwatch_main_pid(s); |
1866 | ||
ecedd90f LP |
1867 | r = service_spawn(s, |
1868 | s->main_command, | |
21b2ce39 | 1869 | s->timeout_start_usec, |
ecedd90f LP |
1870 | true, |
1871 | true, | |
1872 | true, | |
1873 | true, | |
ecedd90f LP |
1874 | false, |
1875 | &pid); | |
1876 | if (r < 0) | |
34e9ba66 LP |
1877 | goto fail; |
1878 | ||
1879 | service_set_main_pid(s, pid); | |
1880 | ||
1881 | return; | |
1882 | ||
1883 | fail: | |
f2341e0a | 1884 | log_unit_warning_errno(UNIT(s), r, "Failed to run next main task: %m"); |
f42806df | 1885 | service_enter_stop(s, SERVICE_FAILURE_RESOURCES); |
34e9ba66 LP |
1886 | } |
1887 | ||
93ae25e6 MO |
1888 | static int service_start_limit_test(Service *s) { |
1889 | assert(s); | |
1890 | ||
1891 | if (ratelimit_test(&s->start_limit)) | |
1892 | return 0; | |
1893 | ||
f2341e0a | 1894 | log_unit_warning(UNIT(s), "Start request repeated too quickly."); |
2928b0a8 LP |
1895 | |
1896 | return failure_action(UNIT(s)->manager, s->start_limit_action, s->reboot_arg); | |
93ae25e6 MO |
1897 | } |
1898 | ||
87f0e418 LP |
1899 | static int service_start(Unit *u) { |
1900 | Service *s = SERVICE(u); | |
4b939747 | 1901 | int r; |
5cb5a6ff LP |
1902 | |
1903 | assert(s); | |
1904 | ||
034c6ed7 LP |
1905 | /* We cannot fulfill this request right now, try again later |
1906 | * please! */ | |
a00973af LP |
1907 | if (IN_SET(s->state, |
1908 | SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, | |
1909 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) | |
5cb5a6ff LP |
1910 | return -EAGAIN; |
1911 | ||
034c6ed7 | 1912 | /* Already on it! */ |
a00973af | 1913 | if (IN_SET(s->state, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST)) |
034c6ed7 LP |
1914 | return 0; |
1915 | ||
2e9d6c12 | 1916 | /* A service that will be restarted must be stopped first to |
7f2cddae | 1917 | * trigger BindsTo and/or OnFailure dependencies. If a user |
2e9d6c12 | 1918 | * does not want to wait for the holdoff time to elapse, the |
d4943dc7 LP |
1919 | * service should be manually restarted, not started. We |
1920 | * simply return EAGAIN here, so that any start jobs stay | |
1921 | * queued, and assume that the auto restart timer will | |
1922 | * eventually trigger the restart. */ | |
1923 | if (s->state == SERVICE_AUTO_RESTART) | |
a8bb2e65 | 1924 | return -EAGAIN; |
2e9d6c12 | 1925 | |
a00973af | 1926 | assert(IN_SET(s->state, SERVICE_DEAD, SERVICE_FAILED)); |
5cb5a6ff | 1927 | |
1e2e8133 | 1928 | /* Make sure we don't enter a busy loop of some kind. */ |
4b939747 | 1929 | r = service_start_limit_test(s); |
c2f34808 | 1930 | if (r < 0) { |
8d1b002a | 1931 | service_enter_dead(s, SERVICE_FAILURE_START_LIMIT, false); |
4b939747 | 1932 | return r; |
c2f34808 | 1933 | } |
1e2e8133 | 1934 | |
f42806df LP |
1935 | s->result = SERVICE_SUCCESS; |
1936 | s->reload_result = SERVICE_SUCCESS; | |
034c6ed7 | 1937 | s->main_pid_known = false; |
6dfa5494 | 1938 | s->main_pid_alien = false; |
47342320 | 1939 | s->forbid_restart = false; |
5ad096b3 | 1940 | s->reset_cpu_usage = true; |
034c6ed7 | 1941 | |
8cfdb077 LP |
1942 | free(s->status_text); |
1943 | s->status_text = NULL; | |
1944 | s->status_errno = 0; | |
1945 | ||
308d72dc LP |
1946 | s->notify_state = NOTIFY_UNKNOWN; |
1947 | ||
034c6ed7 | 1948 | service_enter_start_pre(s); |
82a2b6bb | 1949 | return 1; |
5cb5a6ff LP |
1950 | } |
1951 | ||
87f0e418 LP |
1952 | static int service_stop(Unit *u) { |
1953 | Service *s = SERVICE(u); | |
5cb5a6ff LP |
1954 | |
1955 | assert(s); | |
1956 | ||
a509f0e6 | 1957 | /* Don't create restart jobs from manual stops. */ |
47342320 | 1958 | s->forbid_restart = true; |
034c6ed7 | 1959 | |
e537352b | 1960 | /* Already on it */ |
a00973af LP |
1961 | if (IN_SET(s->state, |
1962 | SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, | |
1963 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) | |
e537352b LP |
1964 | return 0; |
1965 | ||
f0c7b229 | 1966 | /* A restart will be scheduled or is in progress. */ |
034c6ed7 | 1967 | if (s->state == SERVICE_AUTO_RESTART) { |
0c7f15b3 | 1968 | service_set_state(s, SERVICE_DEAD); |
034c6ed7 LP |
1969 | return 0; |
1970 | } | |
1971 | ||
3f6c78dc LP |
1972 | /* If there's already something running we go directly into |
1973 | * kill mode. */ | |
a00973af | 1974 | if (IN_SET(s->state, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, SERVICE_RELOAD)) { |
f42806df | 1975 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS); |
3f6c78dc LP |
1976 | return 0; |
1977 | } | |
5cb5a6ff | 1978 | |
a00973af | 1979 | assert(IN_SET(s->state, SERVICE_RUNNING, SERVICE_EXITED)); |
3a762661 | 1980 | |
f42806df | 1981 | service_enter_stop(s, SERVICE_SUCCESS); |
82a2b6bb | 1982 | return 1; |
5cb5a6ff LP |
1983 | } |
1984 | ||
87f0e418 LP |
1985 | static int service_reload(Unit *u) { |
1986 | Service *s = SERVICE(u); | |
034c6ed7 LP |
1987 | |
1988 | assert(s); | |
1989 | ||
80876c20 | 1990 | assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED); |
034c6ed7 LP |
1991 | |
1992 | service_enter_reload(s); | |
2d018ae2 | 1993 | return 1; |
5cb5a6ff LP |
1994 | } |
1995 | ||
44a6b1b6 | 1996 | _pure_ static bool service_can_reload(Unit *u) { |
87f0e418 | 1997 | Service *s = SERVICE(u); |
034c6ed7 LP |
1998 | |
1999 | assert(s); | |
2000 | ||
2001 | return !!s->exec_command[SERVICE_EXEC_RELOAD]; | |
2002 | } | |
2003 | ||
a16e1123 LP |
2004 | static int service_serialize(Unit *u, FILE *f, FDSet *fds) { |
2005 | Service *s = SERVICE(u); | |
2339fc93 | 2006 | ServiceFDStore *fs; |
a16e1123 LP |
2007 | |
2008 | assert(u); | |
2009 | assert(f); | |
2010 | assert(fds); | |
2011 | ||
2012 | unit_serialize_item(u, f, "state", service_state_to_string(s->state)); | |
f42806df LP |
2013 | unit_serialize_item(u, f, "result", service_result_to_string(s->result)); |
2014 | unit_serialize_item(u, f, "reload-result", service_result_to_string(s->reload_result)); | |
a16e1123 LP |
2015 | |
2016 | if (s->control_pid > 0) | |
f06db334 | 2017 | unit_serialize_item_format(u, f, "control-pid", PID_FMT, s->control_pid); |
a16e1123 | 2018 | |
5925dd3c | 2019 | if (s->main_pid_known && s->main_pid > 0) |
ccd06097 | 2020 | unit_serialize_item_format(u, f, "main-pid", PID_FMT, s->main_pid); |
a16e1123 LP |
2021 | |
2022 | unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known)); | |
de1d4f9b | 2023 | unit_serialize_item(u, f, "bus-name-good", yes_no(s->bus_name_good)); |
a16e1123 | 2024 | |
f2341e0a LP |
2025 | if (s->status_text) { |
2026 | _cleanup_free_ char *c = NULL; | |
2027 | ||
2028 | c = cescape(s->status_text); | |
2029 | unit_serialize_item(u, f, "status-text", strempty(c)); | |
2030 | } | |
3a2776bc | 2031 | |
cfc4eb4c LP |
2032 | /* FIXME: There's a minor uncleanliness here: if there are |
2033 | * multiple commands attached here, we will start from the | |
2034 | * first one again */ | |
a16e1123 | 2035 | if (s->control_command_id >= 0) |
f06db334 | 2036 | unit_serialize_item(u, f, "control-command", service_exec_command_to_string(s->control_command_id)); |
a16e1123 LP |
2037 | |
2038 | if (s->socket_fd >= 0) { | |
2039 | int copy; | |
2040 | ||
2339fc93 LP |
2041 | copy = fdset_put_dup(fds, s->socket_fd); |
2042 | if (copy < 0) | |
a16e1123 LP |
2043 | return copy; |
2044 | ||
2045 | unit_serialize_item_format(u, f, "socket-fd", "%i", copy); | |
2046 | } | |
2047 | ||
e44da745 DM |
2048 | if (s->bus_endpoint_fd >= 0) { |
2049 | int copy; | |
2050 | ||
2339fc93 LP |
2051 | copy = fdset_put_dup(fds, s->bus_endpoint_fd); |
2052 | if (copy < 0) | |
e44da745 DM |
2053 | return copy; |
2054 | ||
2055 | unit_serialize_item_format(u, f, "endpoint-fd", "%i", copy); | |
2056 | } | |
2057 | ||
2339fc93 LP |
2058 | LIST_FOREACH(fd_store, fs, s->fd_store) { |
2059 | int copy; | |
2060 | ||
2061 | copy = fdset_put_dup(fds, fs->fd); | |
2062 | if (copy < 0) | |
2063 | return copy; | |
2064 | ||
2065 | unit_serialize_item_format(u, f, "fd-store-fd", "%i", copy); | |
2066 | } | |
2067 | ||
ecdbca40 | 2068 | if (s->main_exec_status.pid > 0) { |
f06db334 LP |
2069 | unit_serialize_item_format(u, f, "main-exec-status-pid", PID_FMT, s->main_exec_status.pid); |
2070 | dual_timestamp_serialize(f, "main-exec-status-start", &s->main_exec_status.start_timestamp); | |
2071 | dual_timestamp_serialize(f, "main-exec-status-exit", &s->main_exec_status.exit_timestamp); | |
ecdbca40 | 2072 | |
799fd0fd | 2073 | if (dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) { |
f06db334 LP |
2074 | unit_serialize_item_format(u, f, "main-exec-status-code", "%i", s->main_exec_status.code); |
2075 | unit_serialize_item_format(u, f, "main-exec-status-status", "%i", s->main_exec_status.status); | |
ecdbca40 LP |
2076 | } |
2077 | } | |
f06db334 | 2078 | |
a6927d7f | 2079 | if (dual_timestamp_is_set(&s->watchdog_timestamp)) |
842129f5 | 2080 | dual_timestamp_serialize(f, "watchdog-timestamp", &s->watchdog_timestamp); |
ecdbca40 | 2081 | |
6aca9a58 | 2082 | if (s->forbid_restart) |
8d1a2802 | 2083 | unit_serialize_item(u, f, "forbid-restart", yes_no(s->forbid_restart)); |
6aca9a58 | 2084 | |
a16e1123 LP |
2085 | return 0; |
2086 | } | |
2087 | ||
2088 | static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { | |
2089 | Service *s = SERVICE(u); | |
2339fc93 | 2090 | int r; |
a16e1123 LP |
2091 | |
2092 | assert(u); | |
2093 | assert(key); | |
2094 | assert(value); | |
2095 | assert(fds); | |
2096 | ||
2097 | if (streq(key, "state")) { | |
2098 | ServiceState state; | |
2099 | ||
117dcc57 ZJS |
2100 | state = service_state_from_string(value); |
2101 | if (state < 0) | |
f2341e0a | 2102 | log_unit_debug(u, "Failed to parse state value: %s", value); |
a16e1123 LP |
2103 | else |
2104 | s->deserialized_state = state; | |
f42806df LP |
2105 | } else if (streq(key, "result")) { |
2106 | ServiceResult f; | |
2107 | ||
2108 | f = service_result_from_string(value); | |
2109 | if (f < 0) | |
f2341e0a | 2110 | log_unit_debug(u, "Failed to parse result value: %s", value); |
f42806df LP |
2111 | else if (f != SERVICE_SUCCESS) |
2112 | s->result = f; | |
2113 | ||
2114 | } else if (streq(key, "reload-result")) { | |
2115 | ServiceResult f; | |
2116 | ||
2117 | f = service_result_from_string(value); | |
2118 | if (f < 0) | |
f2341e0a | 2119 | log_unit_debug(u, "Failed to parse reload result value: %s", value); |
f42806df LP |
2120 | else if (f != SERVICE_SUCCESS) |
2121 | s->reload_result = f; | |
a16e1123 | 2122 | |
a16e1123 | 2123 | } else if (streq(key, "control-pid")) { |
5925dd3c | 2124 | pid_t pid; |
a16e1123 | 2125 | |
e364ad06 | 2126 | if (parse_pid(value, &pid) < 0) |
f2341e0a | 2127 | log_unit_debug(u, "Failed to parse control-pid value: %s", value); |
a16e1123 | 2128 | else |
e55224ca | 2129 | s->control_pid = pid; |
a16e1123 | 2130 | } else if (streq(key, "main-pid")) { |
5925dd3c | 2131 | pid_t pid; |
a16e1123 | 2132 | |
e364ad06 | 2133 | if (parse_pid(value, &pid) < 0) |
f2341e0a | 2134 | log_unit_debug(u, "Failed to parse main-pid value: %s", value); |
7400b9d2 LP |
2135 | else { |
2136 | service_set_main_pid(s, pid); | |
2137 | unit_watch_pid(UNIT(s), pid); | |
2138 | } | |
a16e1123 LP |
2139 | } else if (streq(key, "main-pid-known")) { |
2140 | int b; | |
2141 | ||
117dcc57 ZJS |
2142 | b = parse_boolean(value); |
2143 | if (b < 0) | |
f2341e0a | 2144 | log_unit_debug(u, "Failed to parse main-pid-known value: %s", value); |
a16e1123 LP |
2145 | else |
2146 | s->main_pid_known = b; | |
de1d4f9b WF |
2147 | } else if (streq(key, "bus-name-good")) { |
2148 | int b; | |
2149 | ||
2150 | b = parse_boolean(value); | |
2151 | if (b < 0) | |
2152 | log_unit_debug(u, "Failed to parse bus-name-good value: %s", value); | |
2153 | else | |
2154 | s->bus_name_good = b; | |
3a2776bc LP |
2155 | } else if (streq(key, "status-text")) { |
2156 | char *t; | |
2157 | ||
f2341e0a LP |
2158 | r = cunescape(value, 0, &t); |
2159 | if (r < 0) | |
2160 | log_unit_debug_errno(u, r, "Failed to unescape status text: %s", value); | |
117dcc57 | 2161 | else { |
3a2776bc LP |
2162 | free(s->status_text); |
2163 | s->status_text = t; | |
2164 | } | |
2165 | ||
a16e1123 LP |
2166 | } else if (streq(key, "control-command")) { |
2167 | ServiceExecCommand id; | |
2168 | ||
117dcc57 ZJS |
2169 | id = service_exec_command_from_string(value); |
2170 | if (id < 0) | |
f2341e0a | 2171 | log_unit_debug(u, "Failed to parse exec-command value: %s", value); |
a16e1123 LP |
2172 | else { |
2173 | s->control_command_id = id; | |
2174 | s->control_command = s->exec_command[id]; | |
2175 | } | |
2176 | } else if (streq(key, "socket-fd")) { | |
2177 | int fd; | |
2178 | ||
2179 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
f2341e0a | 2180 | log_unit_debug(u, "Failed to parse socket-fd value: %s", value); |
a16e1123 | 2181 | else { |
574634bc | 2182 | asynchronous_close(s->socket_fd); |
a16e1123 LP |
2183 | s->socket_fd = fdset_remove(fds, fd); |
2184 | } | |
e44da745 DM |
2185 | } else if (streq(key, "endpoint-fd")) { |
2186 | int fd; | |
2187 | ||
2188 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
f2341e0a | 2189 | log_unit_debug(u, "Failed to parse endpoint-fd value: %s", value); |
e44da745 DM |
2190 | else { |
2191 | safe_close(s->bus_endpoint_fd); | |
2192 | s->bus_endpoint_fd = fdset_remove(fds, fd); | |
2193 | } | |
2339fc93 LP |
2194 | } else if (streq(key, "fd-store-fd")) { |
2195 | int fd; | |
2196 | ||
2197 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
f2341e0a | 2198 | log_unit_debug(u, "Failed to parse fd-store-fd value: %s", value); |
2339fc93 LP |
2199 | else { |
2200 | r = service_add_fd_store(s, fd); | |
2201 | if (r < 0) | |
f2341e0a | 2202 | log_unit_error_errno(u, r, "Failed to add fd to store: %m"); |
2339fc93 LP |
2203 | else if (r > 0) |
2204 | fdset_remove(fds, fd); | |
2205 | } | |
2206 | ||
ecdbca40 LP |
2207 | } else if (streq(key, "main-exec-status-pid")) { |
2208 | pid_t pid; | |
2209 | ||
e364ad06 | 2210 | if (parse_pid(value, &pid) < 0) |
f2341e0a | 2211 | log_unit_debug(u, "Failed to parse main-exec-status-pid value: %s", value); |
ecdbca40 LP |
2212 | else |
2213 | s->main_exec_status.pid = pid; | |
2214 | } else if (streq(key, "main-exec-status-code")) { | |
2215 | int i; | |
2216 | ||
e364ad06 | 2217 | if (safe_atoi(value, &i) < 0) |
f2341e0a | 2218 | log_unit_debug(u, "Failed to parse main-exec-status-code value: %s", value); |
ecdbca40 LP |
2219 | else |
2220 | s->main_exec_status.code = i; | |
2221 | } else if (streq(key, "main-exec-status-status")) { | |
2222 | int i; | |
2223 | ||
e364ad06 | 2224 | if (safe_atoi(value, &i) < 0) |
f2341e0a | 2225 | log_unit_debug(u, "Failed to parse main-exec-status-status value: %s", value); |
ecdbca40 LP |
2226 | else |
2227 | s->main_exec_status.status = i; | |
799fd0fd LP |
2228 | } else if (streq(key, "main-exec-status-start")) |
2229 | dual_timestamp_deserialize(value, &s->main_exec_status.start_timestamp); | |
2230 | else if (streq(key, "main-exec-status-exit")) | |
2231 | dual_timestamp_deserialize(value, &s->main_exec_status.exit_timestamp); | |
a6927d7f MO |
2232 | else if (streq(key, "watchdog-timestamp")) |
2233 | dual_timestamp_deserialize(value, &s->watchdog_timestamp); | |
613b411c | 2234 | else if (streq(key, "forbid-restart")) { |
6aca9a58 SE |
2235 | int b; |
2236 | ||
2237 | b = parse_boolean(value); | |
2238 | if (b < 0) | |
f2341e0a | 2239 | log_unit_debug(u, "Failed to parse forbid-restart value: %s", value); |
6aca9a58 SE |
2240 | else |
2241 | s->forbid_restart = b; | |
c17ec25e | 2242 | } else |
f2341e0a | 2243 | log_unit_debug(u, "Unknown serialization key: %s", key); |
a16e1123 LP |
2244 | |
2245 | return 0; | |
2246 | } | |
2247 | ||
44a6b1b6 | 2248 | _pure_ static UnitActiveState service_active_state(Unit *u) { |
e056b01d LP |
2249 | const UnitActiveState *table; |
2250 | ||
87f0e418 | 2251 | assert(u); |
5cb5a6ff | 2252 | |
e056b01d LP |
2253 | table = SERVICE(u)->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table; |
2254 | ||
2255 | return table[SERVICE(u)->state]; | |
034c6ed7 LP |
2256 | } |
2257 | ||
10a94420 LP |
2258 | static const char *service_sub_state_to_string(Unit *u) { |
2259 | assert(u); | |
2260 | ||
2261 | return service_state_to_string(SERVICE(u)->state); | |
2262 | } | |
2263 | ||
701cc384 LP |
2264 | static bool service_check_gc(Unit *u) { |
2265 | Service *s = SERVICE(u); | |
2266 | ||
2267 | assert(s); | |
2268 | ||
6d55002a LP |
2269 | /* Never clean up services that still have a process around, |
2270 | * even if the service is formally dead. */ | |
2271 | if (cgroup_good(s) > 0 || | |
2272 | main_pid_good(s) > 0 || | |
2273 | control_pid_good(s) > 0) | |
2274 | return true; | |
2275 | ||
6d55002a LP |
2276 | return false; |
2277 | } | |
2278 | ||
44a6b1b6 | 2279 | _pure_ static bool service_check_snapshot(Unit *u) { |
701cc384 LP |
2280 | Service *s = SERVICE(u); |
2281 | ||
2282 | assert(s); | |
2283 | ||
8bb2d17d | 2284 | return s->socket_fd < 0; |
701cc384 LP |
2285 | } |
2286 | ||
3a111838 MS |
2287 | static int service_retry_pid_file(Service *s) { |
2288 | int r; | |
2289 | ||
2290 | assert(s->pid_file); | |
2291 | assert(s->state == SERVICE_START || s->state == SERVICE_START_POST); | |
2292 | ||
2293 | r = service_load_pid_file(s, false); | |
2294 | if (r < 0) | |
2295 | return r; | |
2296 | ||
2297 | service_unwatch_pid_file(s); | |
2298 | ||
f42806df | 2299 | service_enter_running(s, SERVICE_SUCCESS); |
3a111838 MS |
2300 | return 0; |
2301 | } | |
2302 | ||
2303 | static int service_watch_pid_file(Service *s) { | |
2304 | int r; | |
2305 | ||
f2341e0a | 2306 | log_unit_debug(UNIT(s), "Setting watch for PID file %s", s->pid_file_pathspec->path); |
8bb2d17d | 2307 | |
718db961 | 2308 | r = path_spec_watch(s->pid_file_pathspec, service_dispatch_io); |
3a111838 MS |
2309 | if (r < 0) |
2310 | goto fail; | |
2311 | ||
2312 | /* the pidfile might have appeared just before we set the watch */ | |
f2341e0a | 2313 | log_unit_debug(UNIT(s), "Trying to read PID file %s in case it changed", s->pid_file_pathspec->path); |
3a111838 MS |
2314 | service_retry_pid_file(s); |
2315 | ||
2316 | return 0; | |
2317 | fail: | |
f2341e0a | 2318 | log_unit_error_errno(UNIT(s), r, "Failed to set a watch for PID file %s: %m", s->pid_file_pathspec->path); |
3a111838 MS |
2319 | service_unwatch_pid_file(s); |
2320 | return r; | |
2321 | } | |
2322 | ||
2323 | static int service_demand_pid_file(Service *s) { | |
2324 | PathSpec *ps; | |
2325 | ||
2326 | assert(s->pid_file); | |
2327 | assert(!s->pid_file_pathspec); | |
2328 | ||
2329 | ps = new0(PathSpec, 1); | |
2330 | if (!ps) | |
2331 | return -ENOMEM; | |
2332 | ||
718db961 | 2333 | ps->unit = UNIT(s); |
3a111838 MS |
2334 | ps->path = strdup(s->pid_file); |
2335 | if (!ps->path) { | |
2336 | free(ps); | |
2337 | return -ENOMEM; | |
2338 | } | |
2339 | ||
2340 | path_kill_slashes(ps->path); | |
2341 | ||
2342 | /* PATH_CHANGED would not be enough. There are daemons (sendmail) that | |
2343 | * keep their PID file open all the time. */ | |
2344 | ps->type = PATH_MODIFIED; | |
2345 | ps->inotify_fd = -1; | |
2346 | ||
2347 | s->pid_file_pathspec = ps; | |
2348 | ||
2349 | return service_watch_pid_file(s); | |
2350 | } | |
2351 | ||
718db961 | 2352 | static int service_dispatch_io(sd_event_source *source, int fd, uint32_t events, void *userdata) { |
e14c2802 LP |
2353 | PathSpec *p = userdata; |
2354 | Service *s; | |
2355 | ||
2356 | assert(p); | |
2357 | ||
2358 | s = SERVICE(p->unit); | |
3a111838 MS |
2359 | |
2360 | assert(s); | |
2361 | assert(fd >= 0); | |
2362 | assert(s->state == SERVICE_START || s->state == SERVICE_START_POST); | |
2363 | assert(s->pid_file_pathspec); | |
57020a3a | 2364 | assert(path_spec_owns_inotify_fd(s->pid_file_pathspec, fd)); |
3a111838 | 2365 | |
f2341e0a | 2366 | log_unit_debug(UNIT(s), "inotify event"); |
3a111838 | 2367 | |
e14c2802 | 2368 | if (path_spec_fd_event(p, events) < 0) |
3a111838 MS |
2369 | goto fail; |
2370 | ||
2371 | if (service_retry_pid_file(s) == 0) | |
718db961 | 2372 | return 0; |
3a111838 MS |
2373 | |
2374 | if (service_watch_pid_file(s) < 0) | |
2375 | goto fail; | |
2376 | ||
718db961 LP |
2377 | return 0; |
2378 | ||
3a111838 MS |
2379 | fail: |
2380 | service_unwatch_pid_file(s); | |
f42806df | 2381 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
718db961 | 2382 | return 0; |
3a111838 MS |
2383 | } |
2384 | ||
a911bb9a LP |
2385 | static void service_notify_cgroup_empty_event(Unit *u) { |
2386 | Service *s = SERVICE(u); | |
2387 | ||
2388 | assert(u); | |
2389 | ||
f2341e0a | 2390 | log_unit_debug(u, "cgroup is empty"); |
a911bb9a LP |
2391 | |
2392 | switch (s->state) { | |
2393 | ||
2394 | /* Waiting for SIGCHLD is usually more interesting, | |
2395 | * because it includes return codes/signals. Which is | |
2396 | * why we ignore the cgroup events for most cases, | |
2397 | * except when we don't know pid which to expect the | |
2398 | * SIGCHLD for. */ | |
2399 | ||
2400 | case SERVICE_START: | |
2401 | case SERVICE_START_POST: | |
2402 | /* If we were hoping for the daemon to write its PID file, | |
2403 | * we can give up now. */ | |
2404 | if (s->pid_file_pathspec) { | |
f2341e0a | 2405 | log_unit_warning(u, "Daemon never wrote its PID file. Failing."); |
8bb2d17d | 2406 | |
a911bb9a LP |
2407 | service_unwatch_pid_file(s); |
2408 | if (s->state == SERVICE_START) | |
2409 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES); | |
2410 | else | |
2411 | service_enter_stop(s, SERVICE_FAILURE_RESOURCES); | |
2412 | } | |
2413 | break; | |
2414 | ||
2415 | case SERVICE_RUNNING: | |
2416 | /* service_enter_running() will figure out what to do */ | |
2417 | service_enter_running(s, SERVICE_SUCCESS); | |
2418 | break; | |
2419 | ||
db2cb23b | 2420 | case SERVICE_STOP_SIGABRT: |
a911bb9a LP |
2421 | case SERVICE_STOP_SIGTERM: |
2422 | case SERVICE_STOP_SIGKILL: | |
2423 | ||
2424 | if (main_pid_good(s) <= 0 && !control_pid_good(s)) | |
2425 | service_enter_stop_post(s, SERVICE_SUCCESS); | |
2426 | ||
2427 | break; | |
2428 | ||
2429 | case SERVICE_STOP_POST: | |
2430 | case SERVICE_FINAL_SIGTERM: | |
2431 | case SERVICE_FINAL_SIGKILL: | |
2432 | if (main_pid_good(s) <= 0 && !control_pid_good(s)) | |
2433 | service_enter_dead(s, SERVICE_SUCCESS, true); | |
2434 | ||
2435 | break; | |
2436 | ||
2437 | default: | |
2438 | ; | |
2439 | } | |
2440 | } | |
2441 | ||
87f0e418 LP |
2442 | static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) { |
2443 | Service *s = SERVICE(u); | |
f42806df | 2444 | ServiceResult f; |
5cb5a6ff LP |
2445 | |
2446 | assert(s); | |
034c6ed7 LP |
2447 | assert(pid >= 0); |
2448 | ||
96342de6 LN |
2449 | if (UNIT(s)->fragment_path ? is_clean_exit(code, status, &s->success_status) : |
2450 | is_clean_exit_lsb(code, status, &s->success_status)) | |
f42806df LP |
2451 | f = SERVICE_SUCCESS; |
2452 | else if (code == CLD_EXITED) | |
2453 | f = SERVICE_FAILURE_EXIT_CODE; | |
2454 | else if (code == CLD_KILLED) | |
2455 | f = SERVICE_FAILURE_SIGNAL; | |
2456 | else if (code == CLD_DUMPED) | |
2457 | f = SERVICE_FAILURE_CORE_DUMP; | |
d06dacd0 | 2458 | else |
cfc4eb4c | 2459 | assert_not_reached("Unknown code"); |
034c6ed7 LP |
2460 | |
2461 | if (s->main_pid == pid) { | |
db01f8b3 MS |
2462 | /* Forking services may occasionally move to a new PID. |
2463 | * As long as they update the PID file before exiting the old | |
2464 | * PID, they're fine. */ | |
5375410b | 2465 | if (service_load_pid_file(s, false) == 0) |
db01f8b3 | 2466 | return; |
034c6ed7 | 2467 | |
034c6ed7 | 2468 | s->main_pid = 0; |
6ea832a2 | 2469 | exec_status_exit(&s->main_exec_status, &s->exec_context, pid, code, status); |
034c6ed7 | 2470 | |
867b3b7d | 2471 | if (s->main_command) { |
fbeefb45 LP |
2472 | /* If this is not a forking service than the |
2473 | * main process got started and hence we copy | |
2474 | * the exit status so that it is recorded both | |
2475 | * as main and as control process exit | |
2476 | * status */ | |
2477 | ||
867b3b7d | 2478 | s->main_command->exec_status = s->main_exec_status; |
b708e7ce | 2479 | |
867b3b7d | 2480 | if (s->main_command->ignore) |
f42806df | 2481 | f = SERVICE_SUCCESS; |
fbeefb45 LP |
2482 | } else if (s->exec_command[SERVICE_EXEC_START]) { |
2483 | ||
2484 | /* If this is a forked process, then we should | |
2485 | * ignore the return value if this was | |
2486 | * configured for the starter process */ | |
2487 | ||
2488 | if (s->exec_command[SERVICE_EXEC_START]->ignore) | |
2489 | f = SERVICE_SUCCESS; | |
034c6ed7 LP |
2490 | } |
2491 | ||
f2341e0a LP |
2492 | log_struct(f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE, |
2493 | LOG_UNIT_ID(u), | |
2494 | LOG_UNIT_MESSAGE(u, "Main process exited, code=%s, status=%i/%s", | |
2495 | sigchld_code_to_string(code), status, | |
e2cc6eca LP |
2496 | strna(code == CLD_EXITED |
2497 | ? exit_status_to_string(status, EXIT_STATUS_FULL) | |
2498 | : signal_to_string(status))), | |
f2341e0a LP |
2499 | "EXIT_CODE=%s", sigchld_code_to_string(code), |
2500 | "EXIT_STATUS=%i", status, | |
2501 | NULL); | |
f42806df LP |
2502 | |
2503 | if (f != SERVICE_SUCCESS) | |
2504 | s->result = f; | |
034c6ed7 | 2505 | |
867b3b7d LP |
2506 | if (s->main_command && |
2507 | s->main_command->command_next && | |
f42806df | 2508 | f == SERVICE_SUCCESS) { |
034c6ed7 | 2509 | |
34e9ba66 LP |
2510 | /* There is another command to * |
2511 | * execute, so let's do that. */ | |
034c6ed7 | 2512 | |
f2341e0a | 2513 | log_unit_debug(u, "Running next main command for state %s.", service_state_to_string(s->state)); |
f42806df | 2514 | service_run_next_main(s); |
034c6ed7 | 2515 | |
34e9ba66 LP |
2516 | } else { |
2517 | ||
2518 | /* The service exited, so the service is officially | |
2519 | * gone. */ | |
867b3b7d | 2520 | s->main_command = NULL; |
34e9ba66 LP |
2521 | |
2522 | switch (s->state) { | |
2523 | ||
2524 | case SERVICE_START_POST: | |
2525 | case SERVICE_RELOAD: | |
2526 | case SERVICE_STOP: | |
2527 | /* Need to wait until the operation is | |
2528 | * done */ | |
c4653a4d | 2529 | break; |
7d55e835 | 2530 | |
34e9ba66 LP |
2531 | case SERVICE_START: |
2532 | if (s->type == SERVICE_ONESHOT) { | |
2533 | /* This was our main goal, so let's go on */ | |
f42806df | 2534 | if (f == SERVICE_SUCCESS) |
34e9ba66 LP |
2535 | service_enter_start_post(s); |
2536 | else | |
f42806df | 2537 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, f); |
34e9ba66 | 2538 | break; |
34e9ba66 | 2539 | } |
034c6ed7 | 2540 | |
bfba3256 LP |
2541 | /* Fall through */ |
2542 | ||
34e9ba66 | 2543 | case SERVICE_RUNNING: |
f42806df | 2544 | service_enter_running(s, f); |
34e9ba66 | 2545 | break; |
034c6ed7 | 2546 | |
db2cb23b | 2547 | case SERVICE_STOP_SIGABRT: |
34e9ba66 LP |
2548 | case SERVICE_STOP_SIGTERM: |
2549 | case SERVICE_STOP_SIGKILL: | |
5cb5a6ff | 2550 | |
34e9ba66 | 2551 | if (!control_pid_good(s)) |
f42806df | 2552 | service_enter_stop_post(s, f); |
5cb5a6ff | 2553 | |
34e9ba66 LP |
2554 | /* If there is still a control process, wait for that first */ |
2555 | break; | |
2556 | ||
bf108e55 LP |
2557 | case SERVICE_STOP_POST: |
2558 | case SERVICE_FINAL_SIGTERM: | |
2559 | case SERVICE_FINAL_SIGKILL: | |
2560 | ||
2561 | if (!control_pid_good(s)) | |
2562 | service_enter_dead(s, f, true); | |
2563 | break; | |
2564 | ||
34e9ba66 LP |
2565 | default: |
2566 | assert_not_reached("Uh, main process died at wrong time."); | |
2567 | } | |
034c6ed7 | 2568 | } |
5cb5a6ff | 2569 | |
034c6ed7 | 2570 | } else if (s->control_pid == pid) { |
34e9ba66 LP |
2571 | s->control_pid = 0; |
2572 | ||
b708e7ce | 2573 | if (s->control_command) { |
8bb2d17d | 2574 | exec_status_exit(&s->control_command->exec_status, &s->exec_context, pid, code, status); |
a16e1123 | 2575 | |
b708e7ce | 2576 | if (s->control_command->ignore) |
f42806df | 2577 | f = SERVICE_SUCCESS; |
b708e7ce LP |
2578 | } |
2579 | ||
f2341e0a LP |
2580 | log_unit_full(u, f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE, 0, |
2581 | "Control process exited, code=%s status=%i", | |
2582 | sigchld_code_to_string(code), status); | |
f42806df LP |
2583 | |
2584 | if (f != SERVICE_SUCCESS) | |
2585 | s->result = f; | |
034c6ed7 | 2586 | |
88f3e0c9 LP |
2587 | /* Immediately get rid of the cgroup, so that the |
2588 | * kernel doesn't delay the cgroup empty messages for | |
2589 | * the service cgroup any longer than necessary */ | |
4ad49000 | 2590 | service_kill_control_processes(s); |
88f3e0c9 | 2591 | |
34e9ba66 LP |
2592 | if (s->control_command && |
2593 | s->control_command->command_next && | |
f42806df | 2594 | f == SERVICE_SUCCESS) { |
034c6ed7 LP |
2595 | |
2596 | /* There is another command to * | |
2597 | * execute, so let's do that. */ | |
2598 | ||
f2341e0a | 2599 | log_unit_debug(u, "Running next control command for state %s.", service_state_to_string(s->state)); |
f42806df | 2600 | service_run_next_control(s); |
034c6ed7 | 2601 | |
80876c20 | 2602 | } else { |
034c6ed7 LP |
2603 | /* No further commands for this step, so let's |
2604 | * figure out what to do next */ | |
2605 | ||
a16e1123 LP |
2606 | s->control_command = NULL; |
2607 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; | |
2608 | ||
f2341e0a | 2609 | log_unit_debug(u, "Got final SIGCHLD for state %s.", service_state_to_string(s->state)); |
bd982a8b | 2610 | |
034c6ed7 LP |
2611 | switch (s->state) { |
2612 | ||
2613 | case SERVICE_START_PRE: | |
f42806df | 2614 | if (f == SERVICE_SUCCESS) |
034c6ed7 LP |
2615 | service_enter_start(s); |
2616 | else | |
f42806df | 2617 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, f); |
034c6ed7 LP |
2618 | break; |
2619 | ||
2620 | case SERVICE_START: | |
bfba3256 LP |
2621 | if (s->type != SERVICE_FORKING) |
2622 | /* Maybe spurious event due to a reload that changed the type? */ | |
2623 | break; | |
034c6ed7 | 2624 | |
f42806df LP |
2625 | if (f != SERVICE_SUCCESS) { |
2626 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, f); | |
3a111838 MS |
2627 | break; |
2628 | } | |
034c6ed7 | 2629 | |
3a111838 | 2630 | if (s->pid_file) { |
f42806df LP |
2631 | bool has_start_post; |
2632 | int r; | |
2633 | ||
3a111838 MS |
2634 | /* Let's try to load the pid file here if we can. |
2635 | * The PID file might actually be created by a START_POST | |
2636 | * script. In that case don't worry if the loading fails. */ | |
f42806df LP |
2637 | |
2638 | has_start_post = !!s->exec_command[SERVICE_EXEC_START_POST]; | |
2639 | r = service_load_pid_file(s, !has_start_post); | |
3a111838 MS |
2640 | if (!has_start_post && r < 0) { |
2641 | r = service_demand_pid_file(s); | |
2642 | if (r < 0 || !cgroup_good(s)) | |
f42806df | 2643 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES); |
3a111838 MS |
2644 | break; |
2645 | } | |
034c6ed7 | 2646 | } else |
3a111838 | 2647 | service_search_main_pid(s); |
034c6ed7 | 2648 | |
3a111838 | 2649 | service_enter_start_post(s); |
034c6ed7 LP |
2650 | break; |
2651 | ||
2652 | case SERVICE_START_POST: | |
f42806df LP |
2653 | if (f != SERVICE_SUCCESS) { |
2654 | service_enter_stop(s, f); | |
2096e009 | 2655 | break; |
034c6ed7 LP |
2656 | } |
2657 | ||
2096e009 | 2658 | if (s->pid_file) { |
f42806df LP |
2659 | int r; |
2660 | ||
2661 | r = service_load_pid_file(s, true); | |
2096e009 MS |
2662 | if (r < 0) { |
2663 | r = service_demand_pid_file(s); | |
2664 | if (r < 0 || !cgroup_good(s)) | |
f42806df | 2665 | service_enter_stop(s, SERVICE_FAILURE_RESOURCES); |
2096e009 MS |
2666 | break; |
2667 | } | |
2668 | } else | |
2669 | service_search_main_pid(s); | |
2670 | ||
f42806df | 2671 | service_enter_running(s, SERVICE_SUCCESS); |
3185a36b | 2672 | break; |
034c6ed7 LP |
2673 | |
2674 | case SERVICE_RELOAD: | |
f42806df | 2675 | if (f == SERVICE_SUCCESS) { |
5375410b | 2676 | service_load_pid_file(s, true); |
3185a36b LP |
2677 | service_search_main_pid(s); |
2678 | } | |
2679 | ||
f42806df LP |
2680 | s->reload_result = f; |
2681 | service_enter_running(s, SERVICE_SUCCESS); | |
034c6ed7 LP |
2682 | break; |
2683 | ||
2684 | case SERVICE_STOP: | |
f42806df | 2685 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
034c6ed7 LP |
2686 | break; |
2687 | ||
db2cb23b | 2688 | case SERVICE_STOP_SIGABRT: |
034c6ed7 LP |
2689 | case SERVICE_STOP_SIGTERM: |
2690 | case SERVICE_STOP_SIGKILL: | |
2691 | if (main_pid_good(s) <= 0) | |
f42806df | 2692 | service_enter_stop_post(s, f); |
034c6ed7 LP |
2693 | |
2694 | /* If there is still a service | |
2695 | * process around, wait until | |
2696 | * that one quit, too */ | |
2697 | break; | |
2698 | ||
2699 | case SERVICE_STOP_POST: | |
2700 | case SERVICE_FINAL_SIGTERM: | |
2701 | case SERVICE_FINAL_SIGKILL: | |
bf108e55 LP |
2702 | if (main_pid_good(s) <= 0) |
2703 | service_enter_dead(s, f, true); | |
034c6ed7 LP |
2704 | break; |
2705 | ||
2706 | default: | |
2707 | assert_not_reached("Uh, control process died at wrong time."); | |
2708 | } | |
2709 | } | |
8c47c732 | 2710 | } |
c4e2ceae LP |
2711 | |
2712 | /* Notify clients about changed exit status */ | |
2713 | unit_add_to_dbus_queue(u); | |
a911bb9a LP |
2714 | |
2715 | /* We got one SIGCHLD for the service, let's watch all | |
2716 | * processes that are now running of the service, and watch | |
2717 | * that. Among the PIDs we then watch will be children | |
2718 | * reassigned to us, which hopefully allows us to identify | |
2719 | * when all children are gone */ | |
2720 | unit_tidy_watch_pids(u, s->main_pid, s->control_pid); | |
2721 | unit_watch_all_pids(u); | |
2722 | ||
2723 | /* If the PID set is empty now, then let's finish this off */ | |
2724 | if (set_isempty(u->pids)) | |
2725 | service_notify_cgroup_empty_event(u); | |
034c6ed7 LP |
2726 | } |
2727 | ||
718db961 LP |
2728 | static int service_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) { |
2729 | Service *s = SERVICE(userdata); | |
034c6ed7 LP |
2730 | |
2731 | assert(s); | |
718db961 | 2732 | assert(source == s->timer_event_source); |
034c6ed7 LP |
2733 | |
2734 | switch (s->state) { | |
2735 | ||
2736 | case SERVICE_START_PRE: | |
2737 | case SERVICE_START: | |
f2341e0a | 2738 | log_unit_warning(UNIT(s), "%s operation timed out. Terminating.", s->state == SERVICE_START ? "Start" : "Start-pre"); |
f42806df | 2739 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT); |
80876c20 LP |
2740 | break; |
2741 | ||
034c6ed7 | 2742 | case SERVICE_START_POST: |
f2341e0a | 2743 | log_unit_warning(UNIT(s), "Start-post operation timed out. Stopping."); |
f42806df | 2744 | service_enter_stop(s, SERVICE_FAILURE_TIMEOUT); |
034c6ed7 LP |
2745 | break; |
2746 | ||
e2f3b44c | 2747 | case SERVICE_RELOAD: |
f2341e0a | 2748 | log_unit_warning(UNIT(s), "Reload operation timed out. Stopping."); |
f42806df LP |
2749 | s->reload_result = SERVICE_FAILURE_TIMEOUT; |
2750 | service_enter_running(s, SERVICE_SUCCESS); | |
e2f3b44c LP |
2751 | break; |
2752 | ||
034c6ed7 | 2753 | case SERVICE_STOP: |
f2341e0a | 2754 | log_unit_warning(UNIT(s), "Stopping timed out. Terminating."); |
f42806df | 2755 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT); |
034c6ed7 LP |
2756 | break; |
2757 | ||
db2cb23b | 2758 | case SERVICE_STOP_SIGABRT: |
f2341e0a | 2759 | log_unit_warning(UNIT(s), "State 'stop-sigabrt' timed out. Terminating."); |
2ab2ab7b | 2760 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT); |
db2cb23b UTL |
2761 | break; |
2762 | ||
034c6ed7 | 2763 | case SERVICE_STOP_SIGTERM: |
4819ff03 | 2764 | if (s->kill_context.send_sigkill) { |
f2341e0a | 2765 | log_unit_warning(UNIT(s), "State 'stop-sigterm' timed out. Killing."); |
f42806df | 2766 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_TIMEOUT); |
ba035df2 | 2767 | } else { |
f2341e0a | 2768 | log_unit_warning(UNIT(s), "State 'stop-sigterm' timed out. Skipping SIGKILL."); |
f42806df | 2769 | service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT); |
ba035df2 LP |
2770 | } |
2771 | ||
034c6ed7 LP |
2772 | break; |
2773 | ||
2774 | case SERVICE_STOP_SIGKILL: | |
35b8ca3a | 2775 | /* Uh, we sent a SIGKILL and it is still not gone? |
034c6ed7 LP |
2776 | * Must be something we cannot kill, so let's just be |
2777 | * weirded out and continue */ | |
2778 | ||
f2341e0a | 2779 | log_unit_warning(UNIT(s), "Processes still around after SIGKILL. Ignoring."); |
f42806df | 2780 | service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT); |
034c6ed7 LP |
2781 | break; |
2782 | ||
2783 | case SERVICE_STOP_POST: | |
f2341e0a | 2784 | log_unit_warning(UNIT(s), "State 'stop-post' timed out. Terminating."); |
f42806df | 2785 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT); |
034c6ed7 LP |
2786 | break; |
2787 | ||
2788 | case SERVICE_FINAL_SIGTERM: | |
4819ff03 | 2789 | if (s->kill_context.send_sigkill) { |
f2341e0a | 2790 | log_unit_warning(UNIT(s), "State 'stop-final-sigterm' timed out. Killing."); |
f42806df | 2791 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_FAILURE_TIMEOUT); |
ba035df2 | 2792 | } else { |
f2341e0a | 2793 | log_unit_warning(UNIT(s), "State 'stop-final-sigterm' timed out. Skipping SIGKILL. Entering failed mode."); |
f42806df | 2794 | service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, false); |
ba035df2 LP |
2795 | } |
2796 | ||
034c6ed7 LP |
2797 | break; |
2798 | ||
2799 | case SERVICE_FINAL_SIGKILL: | |
f2341e0a | 2800 | log_unit_warning(UNIT(s), "Processes still around after final SIGKILL. Entering failed mode."); |
f42806df | 2801 | service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, true); |
034c6ed7 LP |
2802 | break; |
2803 | ||
2804 | case SERVICE_AUTO_RESTART: | |
f2341e0a | 2805 | log_unit_info(UNIT(s), |
ef417cfd | 2806 | s->restart_usec > 0 ? |
f2341e0a LP |
2807 | "Service hold-off time over, scheduling restart." : |
2808 | "Service has no hold-off time, scheduling restart."); | |
034c6ed7 LP |
2809 | service_enter_restart(s); |
2810 | break; | |
2811 | ||
2812 | default: | |
2813 | assert_not_reached("Timeout at wrong time."); | |
2814 | } | |
718db961 LP |
2815 | |
2816 | return 0; | |
2817 | } | |
2818 | ||
2819 | static int service_dispatch_watchdog(sd_event_source *source, usec_t usec, void *userdata) { | |
2820 | Service *s = SERVICE(userdata); | |
a7850c7d | 2821 | char t[FORMAT_TIMESPAN_MAX]; |
718db961 LP |
2822 | |
2823 | assert(s); | |
2824 | assert(source == s->watchdog_event_source); | |
2825 | ||
f2341e0a | 2826 | log_unit_error(UNIT(s), "Watchdog timeout (limit %s)!", |
a7850c7d | 2827 | format_timespan(t, sizeof(t), s->watchdog_usec, 1)); |
8bb2d17d | 2828 | |
db2cb23b | 2829 | service_enter_signal(s, SERVICE_STOP_SIGABRT, SERVICE_FAILURE_WATCHDOG); |
842129f5 | 2830 | |
718db961 | 2831 | return 0; |
5cb5a6ff LP |
2832 | } |
2833 | ||
a354329f | 2834 | static void service_notify_message(Unit *u, pid_t pid, char **tags, FDSet *fds) { |
8c47c732 | 2835 | Service *s = SERVICE(u); |
308d72dc | 2836 | _cleanup_free_ char *cc = NULL; |
30b5275a | 2837 | bool notify_dbus = false; |
308d72dc | 2838 | const char *e; |
8c47c732 LP |
2839 | |
2840 | assert(u); | |
2841 | ||
308d72dc | 2842 | cc = strv_join(tags, ", "); |
da13d4d2 | 2843 | |
c952c6ec | 2844 | if (s->notify_access == NOTIFY_NONE) { |
f2341e0a | 2845 | log_unit_warning(u, "Got notification message from PID "PID_FMT", but reception is disabled.", pid); |
c952c6ec | 2846 | return; |
34959677 | 2847 | } else if (s->notify_access == NOTIFY_MAIN && pid != s->main_pid) { |
336c6e46 | 2848 | if (s->main_pid != 0) |
f2341e0a | 2849 | log_unit_warning(u, "Got notification message from PID "PID_FMT", but reception only permitted for main PID "PID_FMT, pid, s->main_pid); |
336c6e46 | 2850 | else |
f2341e0a | 2851 | log_unit_debug(u, "Got notification message from PID "PID_FMT", but reception only permitted for main PID which is currently not known", pid); |
c952c6ec | 2852 | return; |
34959677 TG |
2853 | } else |
2854 | log_unit_debug(u, "Got notification message from PID "PID_FMT" (%s)", pid, isempty(cc) ? "n/a" : cc); | |
c952c6ec | 2855 | |
8c47c732 | 2856 | /* Interpret MAINPID= */ |
28849dba | 2857 | e = strv_find_startswith(tags, "MAINPID="); |
5e56b378 | 2858 | if (e && IN_SET(s->state, SERVICE_START, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) { |
28849dba | 2859 | if (parse_pid(e, &pid) < 0) |
f2341e0a | 2860 | log_unit_warning(u, "Failed to parse MAINPID= field in notification message: %s", e); |
8c47c732 | 2861 | else { |
5925dd3c | 2862 | service_set_main_pid(s, pid); |
7400b9d2 | 2863 | unit_watch_pid(UNIT(s), pid); |
30b5275a | 2864 | notify_dbus = true; |
8c47c732 LP |
2865 | } |
2866 | } | |
2867 | ||
308d72dc LP |
2868 | /* Interpret RELOADING= */ |
2869 | if (strv_find(tags, "RELOADING=1")) { | |
2870 | ||
308d72dc LP |
2871 | s->notify_state = NOTIFY_RELOADING; |
2872 | ||
2873 | if (s->state == SERVICE_RUNNING) | |
2874 | service_enter_reload_by_notify(s); | |
2875 | ||
2876 | notify_dbus = true; | |
2877 | } | |
2878 | ||
8c47c732 | 2879 | /* Interpret READY= */ |
308d72dc LP |
2880 | if (strv_find(tags, "READY=1")) { |
2881 | ||
308d72dc LP |
2882 | s->notify_state = NOTIFY_READY; |
2883 | ||
2884 | /* Type=notify services inform us about completed | |
2885 | * initialization with READY=1 */ | |
2886 | if (s->type == SERVICE_NOTIFY && s->state == SERVICE_START) | |
2887 | service_enter_start_post(s); | |
2888 | ||
2889 | /* Sending READY=1 while we are reloading informs us | |
2890 | * that the reloading is complete */ | |
2891 | if (s->state == SERVICE_RELOAD && s->control_pid == 0) | |
2892 | service_enter_running(s, SERVICE_SUCCESS); | |
2893 | ||
2894 | notify_dbus = true; | |
2895 | } | |
2896 | ||
2897 | /* Interpret STOPPING= */ | |
2898 | if (strv_find(tags, "STOPPING=1")) { | |
2899 | ||
308d72dc LP |
2900 | s->notify_state = NOTIFY_STOPPING; |
2901 | ||
2902 | if (s->state == SERVICE_RUNNING) | |
2903 | service_enter_stop_by_notify(s); | |
2904 | ||
30b5275a | 2905 | notify_dbus = true; |
8c47c732 LP |
2906 | } |
2907 | ||
2908 | /* Interpret STATUS= */ | |
28849dba | 2909 | e = strv_find_startswith(tags, "STATUS="); |
7f110ff9 | 2910 | if (e) { |
28849dba | 2911 | _cleanup_free_ char *t = NULL; |
8c47c732 | 2912 | |
28849dba LP |
2913 | if (!isempty(e)) { |
2914 | if (!utf8_is_valid(e)) | |
f2341e0a | 2915 | log_unit_warning(u, "Status message in notification message is not UTF-8 clean."); |
28849dba | 2916 | else { |
28849dba LP |
2917 | t = strdup(e); |
2918 | if (!t) | |
2919 | log_oom(); | |
3a2776bc | 2920 | } |
28849dba | 2921 | } |
8c47c732 | 2922 | |
30b5275a | 2923 | if (!streq_ptr(s->status_text, t)) { |
28849dba | 2924 | |
3a2776bc LP |
2925 | free(s->status_text); |
2926 | s->status_text = t; | |
28849dba LP |
2927 | t = NULL; |
2928 | ||
30b5275a | 2929 | notify_dbus = true; |
28849dba | 2930 | } |
8c47c732 | 2931 | } |
842129f5 | 2932 | |
4774e357 | 2933 | /* Interpret ERRNO= */ |
28849dba | 2934 | e = strv_find_startswith(tags, "ERRNO="); |
4774e357 MAA |
2935 | if (e) { |
2936 | int status_errno; | |
2937 | ||
28849dba | 2938 | if (safe_atoi(e, &status_errno) < 0 || status_errno < 0) |
f2341e0a | 2939 | log_unit_warning(u, "Failed to parse ERRNO= field in notification message: %s", e); |
4774e357 | 2940 | else { |
4774e357 MAA |
2941 | if (s->status_errno != status_errno) { |
2942 | s->status_errno = status_errno; | |
2943 | notify_dbus = true; | |
2944 | } | |
2945 | } | |
2946 | } | |
2947 | ||
6f285378 | 2948 | /* Interpret WATCHDOG= */ |
a6927d7f | 2949 | if (strv_find(tags, "WATCHDOG=1")) { |
842129f5 | 2950 | service_reset_watchdog(s); |
a6927d7f | 2951 | } |
c4e2ceae | 2952 | |
a354329f LP |
2953 | /* Add the passed fds to the fd store */ |
2954 | if (strv_find(tags, "FDSTORE=1")) { | |
2339fc93 | 2955 | service_add_fd_store_set(s, fds); |
a354329f LP |
2956 | } |
2957 | ||
c4e2ceae | 2958 | /* Notify clients about changed status or main pid */ |
30b5275a LP |
2959 | if (notify_dbus) |
2960 | unit_add_to_dbus_queue(u); | |
8c47c732 LP |
2961 | } |
2962 | ||
68db7a3b ZJS |
2963 | static int service_get_timeout(Unit *u, uint64_t *timeout) { |
2964 | Service *s = SERVICE(u); | |
2965 | int r; | |
2966 | ||
2967 | if (!s->timer_event_source) | |
2968 | return 0; | |
2969 | ||
2970 | r = sd_event_source_get_time(s->timer_event_source, timeout); | |
2971 | if (r < 0) | |
2972 | return r; | |
2973 | ||
2974 | return 1; | |
2975 | } | |
2976 | ||
05e343b7 LP |
2977 | static void service_bus_name_owner_change( |
2978 | Unit *u, | |
2979 | const char *name, | |
2980 | const char *old_owner, | |
2981 | const char *new_owner) { | |
2982 | ||
2983 | Service *s = SERVICE(u); | |
718db961 | 2984 | int r; |
05e343b7 LP |
2985 | |
2986 | assert(s); | |
2987 | assert(name); | |
2988 | ||
2989 | assert(streq(s->bus_name, name)); | |
2990 | assert(old_owner || new_owner); | |
2991 | ||
2992 | if (old_owner && new_owner) | |
f2341e0a | 2993 | log_unit_debug(u, "D-Bus name %s changed owner from %s to %s", name, old_owner, new_owner); |
05e343b7 | 2994 | else if (old_owner) |
f2341e0a | 2995 | log_unit_debug(u, "D-Bus name %s no longer registered by %s", name, old_owner); |
05e343b7 | 2996 | else |
f2341e0a | 2997 | log_unit_debug(u, "D-Bus name %s now registered by %s", name, new_owner); |
05e343b7 LP |
2998 | |
2999 | s->bus_name_good = !!new_owner; | |
3000 | ||
3001 | if (s->type == SERVICE_DBUS) { | |
3002 | ||
3003 | /* service_enter_running() will figure out what to | |
3004 | * do */ | |
3005 | if (s->state == SERVICE_RUNNING) | |
f42806df | 3006 | service_enter_running(s, SERVICE_SUCCESS); |
05e343b7 LP |
3007 | else if (s->state == SERVICE_START && new_owner) |
3008 | service_enter_start_post(s); | |
3009 | ||
3010 | } else if (new_owner && | |
3011 | s->main_pid <= 0 && | |
3012 | (s->state == SERVICE_START || | |
3013 | s->state == SERVICE_START_POST || | |
3014 | s->state == SERVICE_RUNNING || | |
3015 | s->state == SERVICE_RELOAD)) { | |
3016 | ||
5b12334d | 3017 | _cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL; |
718db961 | 3018 | pid_t pid; |
05e343b7 | 3019 | |
718db961 | 3020 | /* Try to acquire PID from bus service */ |
05e343b7 | 3021 | |
056f95d0 | 3022 | r = sd_bus_get_name_creds(u->manager->api_bus, name, SD_BUS_CREDS_PID, &creds); |
5b12334d LP |
3023 | if (r >= 0) |
3024 | r = sd_bus_creds_get_pid(creds, &pid); | |
718db961 | 3025 | if (r >= 0) { |
f2341e0a | 3026 | log_unit_debug(u, "D-Bus name %s is now owned by process %u", name, (unsigned) pid); |
05e343b7 | 3027 | |
718db961 LP |
3028 | service_set_main_pid(s, pid); |
3029 | unit_watch_pid(UNIT(s), pid); | |
3030 | } | |
7400b9d2 | 3031 | } |
05e343b7 LP |
3032 | } |
3033 | ||
16115b0a | 3034 | int service_set_socket_fd(Service *s, int fd, Socket *sock, bool selinux_context_net) { |
79a98c60 LP |
3035 | _cleanup_free_ char *peer = NULL; |
3036 | int r; | |
57020a3a | 3037 | |
4f2d528d LP |
3038 | assert(s); |
3039 | assert(fd >= 0); | |
3040 | ||
3041 | /* This is called by the socket code when instantiating a new | |
3042 | * service for a stream socket and the socket needs to be | |
3043 | * configured. */ | |
3044 | ||
1124fe6f | 3045 | if (UNIT(s)->load_state != UNIT_LOADED) |
4f2d528d LP |
3046 | return -EINVAL; |
3047 | ||
3048 | if (s->socket_fd >= 0) | |
3049 | return -EBUSY; | |
3050 | ||
3051 | if (s->state != SERVICE_DEAD) | |
3052 | return -EAGAIN; | |
3053 | ||
79a98c60 LP |
3054 | if (getpeername_pretty(fd, &peer) >= 0) { |
3055 | ||
3056 | if (UNIT(s)->description) { | |
3057 | _cleanup_free_ char *a; | |
3058 | ||
3059 | a = strjoin(UNIT(s)->description, " (", peer, ")", NULL); | |
3060 | if (!a) | |
3061 | return -ENOMEM; | |
3062 | ||
3063 | r = unit_set_description(UNIT(s), a); | |
3064 | } else | |
3065 | r = unit_set_description(UNIT(s), peer); | |
3066 | ||
3067 | if (r < 0) | |
3068 | return r; | |
3069 | } | |
3070 | ||
4f2d528d | 3071 | s->socket_fd = fd; |
16115b0a | 3072 | s->socket_fd_selinux_context_net = selinux_context_net; |
6cf6bbc2 | 3073 | |
57020a3a LP |
3074 | unit_ref_set(&s->accept_socket, UNIT(sock)); |
3075 | ||
3076 | return unit_add_two_dependencies(UNIT(sock), UNIT_BEFORE, UNIT_TRIGGERS, UNIT(s), false); | |
4f2d528d LP |
3077 | } |
3078 | ||
fdf20a31 | 3079 | static void service_reset_failed(Unit *u) { |
5632e374 LP |
3080 | Service *s = SERVICE(u); |
3081 | ||
3082 | assert(s); | |
3083 | ||
fdf20a31 | 3084 | if (s->state == SERVICE_FAILED) |
5632e374 LP |
3085 | service_set_state(s, SERVICE_DEAD); |
3086 | ||
f42806df LP |
3087 | s->result = SERVICE_SUCCESS; |
3088 | s->reload_result = SERVICE_SUCCESS; | |
451b34cc LP |
3089 | |
3090 | RATELIMIT_RESET(s->start_limit); | |
5632e374 LP |
3091 | } |
3092 | ||
718db961 | 3093 | static int service_kill(Unit *u, KillWho who, int signo, sd_bus_error *error) { |
8a0867d6 | 3094 | Service *s = SERVICE(u); |
41efeaec | 3095 | |
814cc562 | 3096 | return unit_kill_common(u, who, signo, s->main_pid, s->control_pid, error); |
8a0867d6 LP |
3097 | } |
3098 | ||
94f04347 LP |
3099 | static const char* const service_state_table[_SERVICE_STATE_MAX] = { |
3100 | [SERVICE_DEAD] = "dead", | |
3101 | [SERVICE_START_PRE] = "start-pre", | |
3102 | [SERVICE_START] = "start", | |
3103 | [SERVICE_START_POST] = "start-post", | |
3104 | [SERVICE_RUNNING] = "running", | |
80876c20 | 3105 | [SERVICE_EXITED] = "exited", |
94f04347 LP |
3106 | [SERVICE_RELOAD] = "reload", |
3107 | [SERVICE_STOP] = "stop", | |
1378a3b5 | 3108 | [SERVICE_STOP_SIGABRT] = "stop-sigabrt", |
94f04347 LP |
3109 | [SERVICE_STOP_SIGTERM] = "stop-sigterm", |
3110 | [SERVICE_STOP_SIGKILL] = "stop-sigkill", | |
3111 | [SERVICE_STOP_POST] = "stop-post", | |
3112 | [SERVICE_FINAL_SIGTERM] = "final-sigterm", | |
3113 | [SERVICE_FINAL_SIGKILL] = "final-sigkill", | |
fdf20a31 | 3114 | [SERVICE_FAILED] = "failed", |
94f04347 LP |
3115 | [SERVICE_AUTO_RESTART] = "auto-restart", |
3116 | }; | |
3117 | ||
3118 | DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState); | |
3119 | ||
3120 | static const char* const service_restart_table[_SERVICE_RESTART_MAX] = { | |
525ee6f4 LP |
3121 | [SERVICE_RESTART_NO] = "no", |
3122 | [SERVICE_RESTART_ON_SUCCESS] = "on-success", | |
50caaedb | 3123 | [SERVICE_RESTART_ON_FAILURE] = "on-failure", |
6cfe2fde | 3124 | [SERVICE_RESTART_ON_ABNORMAL] = "on-abnormal", |
dc99a976 | 3125 | [SERVICE_RESTART_ON_WATCHDOG] = "on-watchdog", |
50caaedb | 3126 | [SERVICE_RESTART_ON_ABORT] = "on-abort", |
6cfe2fde | 3127 | [SERVICE_RESTART_ALWAYS] = "always", |
94f04347 LP |
3128 | }; |
3129 | ||
3130 | DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart); | |
3131 | ||
3132 | static const char* const service_type_table[_SERVICE_TYPE_MAX] = { | |
94f04347 | 3133 | [SERVICE_SIMPLE] = "simple", |
0d624a78 | 3134 | [SERVICE_FORKING] = "forking", |
34e9ba66 | 3135 | [SERVICE_ONESHOT] = "oneshot", |
8c47c732 | 3136 | [SERVICE_DBUS] = "dbus", |
f2b68789 LP |
3137 | [SERVICE_NOTIFY] = "notify", |
3138 | [SERVICE_IDLE] = "idle" | |
94f04347 LP |
3139 | }; |
3140 | ||
3141 | DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType); | |
3142 | ||
e537352b | 3143 | static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = { |
94f04347 LP |
3144 | [SERVICE_EXEC_START_PRE] = "ExecStartPre", |
3145 | [SERVICE_EXEC_START] = "ExecStart", | |
3146 | [SERVICE_EXEC_START_POST] = "ExecStartPost", | |
3147 | [SERVICE_EXEC_RELOAD] = "ExecReload", | |
3148 | [SERVICE_EXEC_STOP] = "ExecStop", | |
3149 | [SERVICE_EXEC_STOP_POST] = "ExecStopPost", | |
3150 | }; | |
3151 | ||
3152 | DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand); | |
3153 | ||
c952c6ec LP |
3154 | static const char* const notify_access_table[_NOTIFY_ACCESS_MAX] = { |
3155 | [NOTIFY_NONE] = "none", | |
3156 | [NOTIFY_MAIN] = "main", | |
3157 | [NOTIFY_ALL] = "all" | |
3158 | }; | |
3159 | ||
3160 | DEFINE_STRING_TABLE_LOOKUP(notify_access, NotifyAccess); | |
3161 | ||
308d72dc LP |
3162 | static const char* const notify_state_table[_NOTIFY_STATE_MAX] = { |
3163 | [NOTIFY_UNKNOWN] = "unknown", | |
3164 | [NOTIFY_READY] = "ready", | |
3165 | [NOTIFY_RELOADING] = "reloading", | |
3166 | [NOTIFY_STOPPING] = "stopping", | |
3167 | }; | |
3168 | ||
3169 | DEFINE_STRING_TABLE_LOOKUP(notify_state, NotifyState); | |
3170 | ||
f42806df LP |
3171 | static const char* const service_result_table[_SERVICE_RESULT_MAX] = { |
3172 | [SERVICE_SUCCESS] = "success", | |
3173 | [SERVICE_FAILURE_RESOURCES] = "resources", | |
3174 | [SERVICE_FAILURE_TIMEOUT] = "timeout", | |
3175 | [SERVICE_FAILURE_EXIT_CODE] = "exit-code", | |
3176 | [SERVICE_FAILURE_SIGNAL] = "signal", | |
bb242b7b | 3177 | [SERVICE_FAILURE_CORE_DUMP] = "core-dump", |
8d1b002a LP |
3178 | [SERVICE_FAILURE_WATCHDOG] = "watchdog", |
3179 | [SERVICE_FAILURE_START_LIMIT] = "start-limit" | |
f42806df LP |
3180 | }; |
3181 | ||
3182 | DEFINE_STRING_TABLE_LOOKUP(service_result, ServiceResult); | |
3183 | ||
87f0e418 | 3184 | const UnitVTable service_vtable = { |
7d17cfbc | 3185 | .object_size = sizeof(Service), |
718db961 LP |
3186 | .exec_context_offset = offsetof(Service, exec_context), |
3187 | .cgroup_context_offset = offsetof(Service, cgroup_context), | |
3188 | .kill_context_offset = offsetof(Service, kill_context), | |
613b411c | 3189 | .exec_runtime_offset = offsetof(Service, exec_runtime), |
3ef63c31 | 3190 | |
f975e971 LP |
3191 | .sections = |
3192 | "Unit\0" | |
3193 | "Service\0" | |
3194 | "Install\0", | |
4ad49000 | 3195 | .private_section = "Service", |
71645aca | 3196 | |
034c6ed7 LP |
3197 | .init = service_init, |
3198 | .done = service_done, | |
a16e1123 | 3199 | .load = service_load, |
a354329f | 3200 | .release_resources = service_release_resources, |
a16e1123 LP |
3201 | |
3202 | .coldplug = service_coldplug, | |
034c6ed7 | 3203 | |
5cb5a6ff LP |
3204 | .dump = service_dump, |
3205 | ||
3206 | .start = service_start, | |
3207 | .stop = service_stop, | |
3208 | .reload = service_reload, | |
3209 | ||
034c6ed7 LP |
3210 | .can_reload = service_can_reload, |
3211 | ||
8a0867d6 LP |
3212 | .kill = service_kill, |
3213 | ||
a16e1123 LP |
3214 | .serialize = service_serialize, |
3215 | .deserialize_item = service_deserialize_item, | |
3216 | ||
5cb5a6ff | 3217 | .active_state = service_active_state, |
10a94420 | 3218 | .sub_state_to_string = service_sub_state_to_string, |
5cb5a6ff | 3219 | |
701cc384 LP |
3220 | .check_gc = service_check_gc, |
3221 | .check_snapshot = service_check_snapshot, | |
3222 | ||
034c6ed7 | 3223 | .sigchld_event = service_sigchld_event, |
2c4104f0 | 3224 | |
fdf20a31 | 3225 | .reset_failed = service_reset_failed, |
5632e374 | 3226 | |
4ad49000 | 3227 | .notify_cgroup_empty = service_notify_cgroup_empty_event, |
8c47c732 | 3228 | .notify_message = service_notify_message, |
8e274523 | 3229 | |
05e343b7 | 3230 | .bus_name_owner_change = service_bus_name_owner_change, |
05e343b7 | 3231 | |
718db961 | 3232 | .bus_vtable = bus_service_vtable, |
74c964d3 LP |
3233 | .bus_set_property = bus_service_set_property, |
3234 | .bus_commit_properties = bus_service_commit_properties, | |
4139c1b2 | 3235 | |
68db7a3b | 3236 | .get_timeout = service_get_timeout, |
718db961 LP |
3237 | .can_transient = true, |
3238 | ||
c6918296 MS |
3239 | .status_message_formats = { |
3240 | .starting_stopping = { | |
3241 | [0] = "Starting %s...", | |
3242 | [1] = "Stopping %s...", | |
3243 | }, | |
3244 | .finished_start_job = { | |
3245 | [JOB_DONE] = "Started %s.", | |
3246 | [JOB_FAILED] = "Failed to start %s.", | |
c6918296 MS |
3247 | }, |
3248 | .finished_stop_job = { | |
3249 | [JOB_DONE] = "Stopped %s.", | |
3250 | [JOB_FAILED] = "Stopped (with error) %s.", | |
c6918296 MS |
3251 | }, |
3252 | }, | |
5cb5a6ff | 3253 | }; |